diff --git a/.travis.yml b/.travis.yml
index e72073d..266bad4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -60,6 +60,9 @@ jobs:
     - env: VERSION=2018.12-dev VARIANT=fpm-alpine ARCH=amd64
     - env: VERSION=2018.12-dev VARIANT=fpm ARCH=amd64
     - env: VERSION=2018.12-dev VARIANT=apache ARCH=amd64
+    - env: VERSION=2018.12-rc VARIANT=fpm-alpine ARCH=amd64
+    - env: VERSION=2018.12-rc VARIANT=fpm ARCH=amd64
+    - env: VERSION=2018.12-rc VARIANT=apache ARCH=amd64
 
     - stage: test images (full)
       env: VERSION=2018.09 VARIANT=fpm-alpine ARCH=amd64
@@ -74,3 +77,9 @@ jobs:
     - env: VERSION=2018.12-dev VARIANT=fpm ARCH=i386
     - env: VERSION=2018.12-dev VARIANT=apache ARCH=amd64
     - env: VERSION=2018.12-dev VARIANT=apache ARCH=i386
+    - env: VERSION=2018.12-rc VARIANT=fpm-alpine ARCH=amd64
+    - env: VERSION=2018.12-rc VARIANT=fpm-alpine ARCH=i386
+    - env: VERSION=2018.12-rc VARIANT=fpm ARCH=amd64
+    - env: VERSION=2018.12-rc VARIANT=fpm ARCH=i386
+    - env: VERSION=2018.12-rc VARIANT=apache ARCH=amd64
+    - env: VERSION=2018.12-rc VARIANT=apache ARCH=i386
diff --git a/2018.12-rc/apache/Dockerfile b/2018.12-rc/apache/Dockerfile
new file mode 100644
index 0000000..d504c42
--- /dev/null
+++ b/2018.12-rc/apache/Dockerfile
@@ -0,0 +1,114 @@
+# DO NOT EDIT: created by update.sh from Dockerfile-debian.template
+FROM php:7.1-apache
+LABEL maintainer="Philipp Holzer <admin@philipp.info>"
+
+# entrypoint.sh and cron.sh dependencies
+RUN set -ex; \
+    \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+        rsync \
+        bzip2 \
+        git \
+# For mail() support
+        ssmtp \
+    ; \
+    rm -rf /var/lib/apt/lists/*;
+
+# install the PHP extensions we need
+# see https://friendi.ca/resources/requirements/
+RUN set -ex; \
+    \
+    savedAptMark="$(apt-mark showmanual)"; \
+    \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+        libxml2-dev \
+        mysql-client \
+        bash \
+        autoconf \
+        g++ \
+        make \
+        openssl \
+        libssl-dev \
+        libpng-dev \
+        libjpeg62-turbo-dev \
+        libtool \
+        libmcrypt4 \
+        libmcrypt-dev \
+        imagemagick \
+        libmagick++-dev \
+        libmemcached-dev \
+        libgraphicsmagick1-dev \
+        libfreetype6 \
+        libfreetype6-dev \
+        librsvg2-2 \
+        libcurl4-openssl-dev \
+        curl \
+    ; \
+    \
+    debMultiarch="$(dpkg-architecture --query DEB_BUILD_MULTIARCH)"; \
+    pecl install imagick-3.4.3; \
+        docker-php-ext-enable imagick; \
+        pecl clear-cache \
+    ; \
+    docker-php-ext-configure gd \
+        --with-gd \
+        --enable-gd-native-ttf \
+        --with-freetype-dir=/usr/include/ \
+        --with-png-dir=/usr/include/ \
+        --with-jpeg-dir=/usr/include/ \
+    ; \
+    docker-php-ext-install -j 4 curl pdo pdo_mysql xml gd zip opcache mbstring posix ctype json iconv mcrypt \
+    ; \
+# pecl will claim success even if one install fails, so we need to perform each install separately
+    pecl install memcached-3.0.4; \
+    pecl install redis-3.1.6; \
+    \
+    docker-php-ext-enable \
+        memcached \
+        redis \
+    ; \
+    \
+# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
+    apt-mark auto '.*' > /dev/null; \
+    apt-mark manual $savedAptMark; \
+    ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
+      | awk '/=>/ { print $3 }' \
+      | sort -u \
+      | xargs -r dpkg-query -S \
+      | cut -d: -f1 \
+      | sort -u \
+      | xargs -rt apt-mark manual; \
+    \
+    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+    rm -rf /var/lib/apt/lists/*
+
+RUN chown -R www-data:root /var/www; \
+    chmod -R g=u /var/www
+
+VOLUME /var/www/html
+WORKDIR /var/www/html
+
+RUN a2enmod rewrite remoteip ;\
+    {\
+     echo RemoteIPHeader X-Real-IP ;\
+     echo RemoteIPTrustedProxy 10.0.0.0/8 ;\
+     echo RemoteIPTrustedProxy 172.16.0.0/12 ;\
+     echo RemoteIPTrustedProxy 192.168.0.0/16 ;\
+    } > /etc/apache2/conf-available/remoteip.conf;\
+    a2enconf remoteip
+
+RUN {\
+      echo sendmail_path = "/usr/sbin/sendmail -t -i" ;\
+    } > /usr/local/etc/php/conf.d/sendmail.ini;
+
+COPY *.sh upgrade.exclude /
+RUN chmod +x /*.sh
+
+ENV FRIENDICA_VERSION 2018.12-rc
+ENV FRIENDICA_ADDONS 2018.12-rc
+
+
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["apache2-foreground"]
diff --git a/2018.12-rc/apache/cron.sh b/2018.12-rc/apache/cron.sh
new file mode 100644
index 0000000..ce4d3ae
--- /dev/null
+++ b/2018.12-rc/apache/cron.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+trap "break;exit" HUP INT TERM
+
+while [ ! -f /var/www/html/config/local.ini.php ]; do
+    sleep 1
+done
+
+# TODO let the database and the autoinstall time to complete - not winning a beauty contest
+sleep 15s
+
+php /var/www/html/bin/daemon.php -f start
diff --git a/2018.12-rc/apache/entrypoint.sh b/2018.12-rc/apache/entrypoint.sh
new file mode 100644
index 0000000..26bd8b6
--- /dev/null
+++ b/2018.12-rc/apache/entrypoint.sh
@@ -0,0 +1,195 @@
+#!/bin/sh
+set -eu
+
+# run an command with the www-data user
+run_as() {
+	if [ "$(id -u)" -eq 0 ]; then
+		su - www-data -s /bin/sh -c "cd /var/www/html;$1"
+	else
+		sh -c "$1"
+	fi
+}
+
+# checks if the the first parameter is greater than the second parameter
+version_greater() {
+	[ "$(printf '%s\n' "$@" | sort -t '.' -n -k1,1 -k2,2 | head -n 1)" != "$1" ]
+}
+
+# clones the whole develop branch (Friendica and Addons)
+clone_develop() {
+	friendica_git="${FRIENDICA_VERSION}"
+	addons_git="${FRIENDICA_ADDONS}"
+
+	if echo "$friendica_git" | grep -Eq '^.*\-dev'; then
+		friendica_git="develop"
+	fi
+
+	if echo "$addons_git" | grep -Eq '^.*\-dev'; then
+		addons_git="develop"
+	fi
+
+	echo "Downloading Friendica from GitHub '${friendica_git}' ..."
+
+	# Removing the whole directory first
+	rm -fr /usr/src/friendica
+	sh -c "git clone -q -b ${friendica_git} https://github.com/friendica/friendica /usr/src/friendica"
+
+	mkdir /usr/src/friendica/addon
+	sh -c "git clone -q -b ${addons_git} https://github.com/friendica/friendica-addons /usr/src/friendica/addon"
+
+	echo "Download finished"
+
+	/usr/src/friendica/bin/composer.phar install --no-dev -d /usr/src/friendica
+}
+
+setup_ssmtp() {
+	if [ -n "${SITENAME+x}" ] && [ -n "${SMTP+x}" ] && [ "${SMTP}" != "localhost" ]; then
+		echo "Setup SSMTP for '$SITENAME' with '$SMTP' ..."
+
+		smtp_from=${SMTP_FROM:-no-reply}
+
+		# Setup SSMTP
+		sed -i "s/:root:/:${SITENAME}:/g" /etc/passwd
+		sed -i "s/:Linux\ User:/:${SITENAME}:/g" /etc/passwd
+
+		# add possible mail-senders
+		{
+		 echo "www-data:$smtp_from@$HOSTNAME:$SMTP" ;
+		 echo "root::$smtp_from@$HOSTNAME:$SMTP" ;
+		} > /etc/ssmtp/revaliases;
+
+		# replace ssmtp.conf settings
+		{
+		 echo "root=:$smtp_from@$HOSTNAME" ;
+		 echo "hostname=$HOSTNAME" ;
+		 echo "mailhub=$SMTP" ;
+		 echo "FromLineOverride=YES" ;
+		 if [ -n "${SMTP_TLS+x}" ]; then echo "UseTLS=$SMTP_TLS"; fi
+		 if [ -n "${SMTP_STARTTLS+x}" ]; then echo "UseSTARTTLS=$SMTP_STARTTLS"; fi
+		 if [ -n "${SMTP_AUTH_USER+x}" ]; then echo "AuthUser=$SMTP_AUTH_USER"; fi
+		 if [ -n "${SMTP_AUTH_PASS+x}" ]; then echo "AuthPass=$SMTP_AUTH_PASS";fi
+		 if [ -n "${SMTP_AUTH_METHOD+x}" ]; then echo "AuthMethod=$SMTP_AUTH_METHOD"; fi
+		} > /etc/ssmtp/ssmtp.conf
+
+		echo "Setup finished"
+	fi
+}
+
+# just check if we execute apache or php-fpm
+if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ]; then
+	installed_version="0.0.0.0"
+	if [ -f /var/www/html/VERSION ]; then
+		installed_version="$(cat /var/www/html/VERSION)"
+	fi
+
+	check=false
+	# cloning from git is just possible for develop or Release Candidats
+	if echo "$FRIENDICA_VERSION" | grep -Eq '^.*(\-dev|-rc)'; then
+		# just clone & check if it's a new install or upgrade
+		if [ "$installed_version" = "0.0.0.0" ] || [ "$FRIENDICA_UPGRADE" = "true" ]; then
+			clone_develop
+			image_version="$(cat /usr/src/friendica/VERSION)"
+			check=true
+		fi
+	else
+		image_version="$(cat /usr/src/friendica/VERSION)"
+
+		# check it just in case the version is greater
+		if version_greater "$image_version" "$installed_version"; then
+			check=true
+		fi
+
+		# no downgrading possible
+		if version_greater "$installed_version" "$image_version"; then
+			echo 'Can'\''t copy Friendica sources because the version of the data ($installed_version) is higher than the docker image ('$image_version')', 0
+			exit 1;
+		fi
+	fi
+
+	setup_ssmtp
+
+	if [ "$check" = true ]; then
+		echo "Initializing Friendica $image_version ..."
+
+		if [ "$installed_version" != "0.0.0.0" ]; then
+			echo "Upgrading Friendica from $installed_version ..."
+		fi
+
+		if [ "$(id -u)" -eq 0 ]; then
+			rsync_options="-rlDog --chown=www-data:www-data"
+		else
+			rsync_options="-rlD"
+		fi
+
+		rsync $rsync_options --delete --exclude-from=/upgrade.exclude /usr/src/friendica/ /var/www/html/
+
+		# In case there is no .htaccess, copy it from the default dist file
+		if [ ! -f "/var/www/html/.htaccess" ]; then
+			cp "/var/www/html/.htaccess-dist" "/var/www/html/.htaccess"
+		fi
+
+		if [ -d /var/www/html/view/smarty3 ]; then
+			chmod -R 777 /var/www/html/view/smarty3
+		fi
+		echo "Initializing finished"
+
+		# install
+		if [ "$installed_version" = "0.0.0.0" ]; then
+			echo "New Friendica instance"
+
+			install=false
+			if [ -n "${MYSQL_DATABASE+x}" ] && [ -n "${MYSQL_PASSWORD+x}" ] && [ -n "${MYSQL_HOST+x}" ] && [ -n "${MYSQL_USER+x}" -o -n "${MYSQL_USERNAME+x}" ] && [ -n ${FRIENDICA_ADMIN_MAIL+x} ]; then
+				echo "Installation with environment variables"
+
+				# TODO Bug in PHP Path for automatic installation
+				#FRIENDICA_PHP_PATH=${FRIENDICA_PHP_PATH:-/usr/local/php}
+				FRIENDICA_TZ=${FRIENDICA_TZ:-America/LosAngeles}
+				FRIENDICA_LANG=${FRIENDICA_LANG:-en}
+				MYSQL_PORT=${MYSQL_PORT:-3306}
+				if [ -n "${MYSQL_USER+x}" ]; then
+					MYSQL_USERNAMEFULL=${MYSQL_USER}
+				else
+					MYSQL_USERNAMEFULL=${MYSQL_USERNAME}
+				fi
+
+				# shellcheck disable=SC2016
+				install_options='-s --dbhost "'$MYSQL_HOST'" --dbport "'$MYSQL_PORT'" --dbdata "'$MYSQL_DATABASE'" --dbuser "'$MYSQL_USERNAMEFULL'" --dbpass "'$MYSQL_PASSWORD'"'
+
+				# shellcheck disable=SC2016
+				install_options=$install_options' --admin "'$FRIENDICA_ADMIN_MAIL'" --tz "'$FRIENDICA_TZ'" --lang "'$FRIENDICA_LANG'"'
+				install=true
+			elif [ -f "/usr/src/config/local.ini.php" ]; then
+				echo "Installation with prepared local.ini.php"
+
+				install_options="-f /usr/src/local.ini.php"
+				install=true
+			fi
+
+			if [ "$install" = true ]; then
+				echo "Starting Friendica installation ..."
+				# TODO Let the database time to warm up - not winning a beauty contest
+				sleep 10s
+				run_as "cd /var/www/html; php /var/www/html/bin/console.php autoinstall $install_options"
+
+				# TODO Workaround because of a strange permission issue
+				rm -fr /var/www/html/view/smarty3/compiled
+
+				# load other config files (*.ini.php) to the config folder (currently only local.ini.php and addon.ini.php supported)
+				if [ -d "/usr/src/config" ]; then
+					rsync $rsync_options --ignore-existing /usr/src/config/ /var/www/html/config/
+				fi
+
+				echo "Installation finished"
+			else
+				echo "Running web-based installer on first connect!"
+			fi
+		# upgrade
+		else
+			echo "Upgrading Friendica ..."
+			run_as 'cd /var/www/html; php /var/www/html/bin/console.php dbstructure update'
+			echo "Upgrading finished"
+		fi
+	fi
+fi
+
+exec "$@"
diff --git a/2018.12-rc/apache/upgrade.exclude b/2018.12-rc/apache/upgrade.exclude
new file mode 100644
index 0000000..9c6c08f
--- /dev/null
+++ b/2018.12-rc/apache/upgrade.exclude
@@ -0,0 +1,8 @@
+/.git/
+/photo/
+/proxy/
+/.htconfig.php
+/.htaccess
+/home.*
+/config/local.ini.php
+/config/addon.ini.php
\ No newline at end of file
diff --git a/2018.12-rc/fpm-alpine/Dockerfile b/2018.12-rc/fpm-alpine/Dockerfile
new file mode 100644
index 0000000..6c6963e
--- /dev/null
+++ b/2018.12-rc/fpm-alpine/Dockerfile
@@ -0,0 +1,97 @@
+# DO NOT EDIT: created by update.sh from Dockerfile-alpine.template
+FROM php:7.1-fpm-alpine
+LABEL maintainer="Philipp Holzer <admin@philipp.info>"
+
+# entrypoint.sh and cron.sh dependencies
+RUN set -ex; \
+    apk add --no-cache \
+        rsync \
+        git \
+# For mail() support
+        ssmtp;
+
+# install the PHP extensions we need
+# see https://friendi.ca/resources/requirements/
+RUN set -ex; \
+    \
+    apk add -U --no-cache --virtual .build-deps \
+        libxml2-dev \
+        mysql-client \
+        bash \
+        autoconf \
+        g++ \
+        make \
+        libressl \
+        libressl-dev \
+        libpng \
+        libpng-dev \
+        libjpeg-turbo-dev \
+        imagemagick-dev \
+        imagemagick \
+        libtool \
+        libmcrypt \
+        libmcrypt-dev \
+        libmemcached-dev \
+        cyrus-sasl-dev \
+        freetype \
+        libpng \
+        libjpeg-turbo-dev \
+        freetype-dev \
+        librsvg \
+        libcurl \
+        curl \
+        curl-dev \
+        rsync \
+        bzip2 \
+        pcre-dev \
+    ; \
+    pecl install imagick-3.4.3; \
+        docker-php-ext-enable imagick; \
+        pecl clear-cache; \
+    docker-php-ext-configure gd \
+        --with-gd \
+        --enable-gd-native-ttf \
+        --with-freetype-dir=/usr/include/ \
+        --with-png-dir=/usr/include/ \
+        --with-jpeg-dir=/usr/include/ \
+    ; \
+    docker-php-ext-install -j 4 curl pdo pdo_mysql xml gd zip opcache mbstring posix ctype json iconv mcrypt; \
+    \
+# pecl will claim success even if one install fails, so we need to perform each install separately
+    pecl install memcached-3.0.4; \
+    pecl install redis-3.1.6; \
+    \
+    docker-php-ext-enable \
+        memcached \
+        redis \
+    ; \
+    \
+    runDeps="$( \
+      scanelf --needed --nobanner --format '%n#p' --recursive /usr/local/lib/php/extensions \
+          | tr ',' '\n' \
+          | sort -u \
+          | awk 'system("[ -e /usr/local/lib" $1 " ]") == 0 { next } { print "so:" $1 }' \
+    )"; \
+    apk add --virtual .friendica-phpext-rundeps $runDeps; \
+    apk del .build-deps;
+
+RUN chown -R www-data:www-data /var/www; \
+    chmod -R g=u /var/www
+
+VOLUME /var/www/html
+WORKDIR /var/www/html
+
+
+RUN {\
+      echo sendmail_path = "/usr/sbin/sendmail -t -i" ;\
+    } > /usr/local/etc/php/conf.d/sendmail.ini;
+
+COPY *.sh upgrade.exclude /
+RUN chmod +x /*.sh
+
+ENV FRIENDICA_VERSION 2018.12-rc
+ENV FRIENDICA_ADDONS 2018.12-rc
+
+
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["php-fpm"]
diff --git a/2018.12-rc/fpm-alpine/cron.sh b/2018.12-rc/fpm-alpine/cron.sh
new file mode 100644
index 0000000..ce4d3ae
--- /dev/null
+++ b/2018.12-rc/fpm-alpine/cron.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+trap "break;exit" HUP INT TERM
+
+while [ ! -f /var/www/html/config/local.ini.php ]; do
+    sleep 1
+done
+
+# TODO let the database and the autoinstall time to complete - not winning a beauty contest
+sleep 15s
+
+php /var/www/html/bin/daemon.php -f start
diff --git a/2018.12-rc/fpm-alpine/entrypoint.sh b/2018.12-rc/fpm-alpine/entrypoint.sh
new file mode 100644
index 0000000..26bd8b6
--- /dev/null
+++ b/2018.12-rc/fpm-alpine/entrypoint.sh
@@ -0,0 +1,195 @@
+#!/bin/sh
+set -eu
+
+# run an command with the www-data user
+run_as() {
+	if [ "$(id -u)" -eq 0 ]; then
+		su - www-data -s /bin/sh -c "cd /var/www/html;$1"
+	else
+		sh -c "$1"
+	fi
+}
+
+# checks if the the first parameter is greater than the second parameter
+version_greater() {
+	[ "$(printf '%s\n' "$@" | sort -t '.' -n -k1,1 -k2,2 | head -n 1)" != "$1" ]
+}
+
+# clones the whole develop branch (Friendica and Addons)
+clone_develop() {
+	friendica_git="${FRIENDICA_VERSION}"
+	addons_git="${FRIENDICA_ADDONS}"
+
+	if echo "$friendica_git" | grep -Eq '^.*\-dev'; then
+		friendica_git="develop"
+	fi
+
+	if echo "$addons_git" | grep -Eq '^.*\-dev'; then
+		addons_git="develop"
+	fi
+
+	echo "Downloading Friendica from GitHub '${friendica_git}' ..."
+
+	# Removing the whole directory first
+	rm -fr /usr/src/friendica
+	sh -c "git clone -q -b ${friendica_git} https://github.com/friendica/friendica /usr/src/friendica"
+
+	mkdir /usr/src/friendica/addon
+	sh -c "git clone -q -b ${addons_git} https://github.com/friendica/friendica-addons /usr/src/friendica/addon"
+
+	echo "Download finished"
+
+	/usr/src/friendica/bin/composer.phar install --no-dev -d /usr/src/friendica
+}
+
+setup_ssmtp() {
+	if [ -n "${SITENAME+x}" ] && [ -n "${SMTP+x}" ] && [ "${SMTP}" != "localhost" ]; then
+		echo "Setup SSMTP for '$SITENAME' with '$SMTP' ..."
+
+		smtp_from=${SMTP_FROM:-no-reply}
+
+		# Setup SSMTP
+		sed -i "s/:root:/:${SITENAME}:/g" /etc/passwd
+		sed -i "s/:Linux\ User:/:${SITENAME}:/g" /etc/passwd
+
+		# add possible mail-senders
+		{
+		 echo "www-data:$smtp_from@$HOSTNAME:$SMTP" ;
+		 echo "root::$smtp_from@$HOSTNAME:$SMTP" ;
+		} > /etc/ssmtp/revaliases;
+
+		# replace ssmtp.conf settings
+		{
+		 echo "root=:$smtp_from@$HOSTNAME" ;
+		 echo "hostname=$HOSTNAME" ;
+		 echo "mailhub=$SMTP" ;
+		 echo "FromLineOverride=YES" ;
+		 if [ -n "${SMTP_TLS+x}" ]; then echo "UseTLS=$SMTP_TLS"; fi
+		 if [ -n "${SMTP_STARTTLS+x}" ]; then echo "UseSTARTTLS=$SMTP_STARTTLS"; fi
+		 if [ -n "${SMTP_AUTH_USER+x}" ]; then echo "AuthUser=$SMTP_AUTH_USER"; fi
+		 if [ -n "${SMTP_AUTH_PASS+x}" ]; then echo "AuthPass=$SMTP_AUTH_PASS";fi
+		 if [ -n "${SMTP_AUTH_METHOD+x}" ]; then echo "AuthMethod=$SMTP_AUTH_METHOD"; fi
+		} > /etc/ssmtp/ssmtp.conf
+
+		echo "Setup finished"
+	fi
+}
+
+# just check if we execute apache or php-fpm
+if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ]; then
+	installed_version="0.0.0.0"
+	if [ -f /var/www/html/VERSION ]; then
+		installed_version="$(cat /var/www/html/VERSION)"
+	fi
+
+	check=false
+	# cloning from git is just possible for develop or Release Candidats
+	if echo "$FRIENDICA_VERSION" | grep -Eq '^.*(\-dev|-rc)'; then
+		# just clone & check if it's a new install or upgrade
+		if [ "$installed_version" = "0.0.0.0" ] || [ "$FRIENDICA_UPGRADE" = "true" ]; then
+			clone_develop
+			image_version="$(cat /usr/src/friendica/VERSION)"
+			check=true
+		fi
+	else
+		image_version="$(cat /usr/src/friendica/VERSION)"
+
+		# check it just in case the version is greater
+		if version_greater "$image_version" "$installed_version"; then
+			check=true
+		fi
+
+		# no downgrading possible
+		if version_greater "$installed_version" "$image_version"; then
+			echo 'Can'\''t copy Friendica sources because the version of the data ($installed_version) is higher than the docker image ('$image_version')', 0
+			exit 1;
+		fi
+	fi
+
+	setup_ssmtp
+
+	if [ "$check" = true ]; then
+		echo "Initializing Friendica $image_version ..."
+
+		if [ "$installed_version" != "0.0.0.0" ]; then
+			echo "Upgrading Friendica from $installed_version ..."
+		fi
+
+		if [ "$(id -u)" -eq 0 ]; then
+			rsync_options="-rlDog --chown=www-data:www-data"
+		else
+			rsync_options="-rlD"
+		fi
+
+		rsync $rsync_options --delete --exclude-from=/upgrade.exclude /usr/src/friendica/ /var/www/html/
+
+		# In case there is no .htaccess, copy it from the default dist file
+		if [ ! -f "/var/www/html/.htaccess" ]; then
+			cp "/var/www/html/.htaccess-dist" "/var/www/html/.htaccess"
+		fi
+
+		if [ -d /var/www/html/view/smarty3 ]; then
+			chmod -R 777 /var/www/html/view/smarty3
+		fi
+		echo "Initializing finished"
+
+		# install
+		if [ "$installed_version" = "0.0.0.0" ]; then
+			echo "New Friendica instance"
+
+			install=false
+			if [ -n "${MYSQL_DATABASE+x}" ] && [ -n "${MYSQL_PASSWORD+x}" ] && [ -n "${MYSQL_HOST+x}" ] && [ -n "${MYSQL_USER+x}" -o -n "${MYSQL_USERNAME+x}" ] && [ -n ${FRIENDICA_ADMIN_MAIL+x} ]; then
+				echo "Installation with environment variables"
+
+				# TODO Bug in PHP Path for automatic installation
+				#FRIENDICA_PHP_PATH=${FRIENDICA_PHP_PATH:-/usr/local/php}
+				FRIENDICA_TZ=${FRIENDICA_TZ:-America/LosAngeles}
+				FRIENDICA_LANG=${FRIENDICA_LANG:-en}
+				MYSQL_PORT=${MYSQL_PORT:-3306}
+				if [ -n "${MYSQL_USER+x}" ]; then
+					MYSQL_USERNAMEFULL=${MYSQL_USER}
+				else
+					MYSQL_USERNAMEFULL=${MYSQL_USERNAME}
+				fi
+
+				# shellcheck disable=SC2016
+				install_options='-s --dbhost "'$MYSQL_HOST'" --dbport "'$MYSQL_PORT'" --dbdata "'$MYSQL_DATABASE'" --dbuser "'$MYSQL_USERNAMEFULL'" --dbpass "'$MYSQL_PASSWORD'"'
+
+				# shellcheck disable=SC2016
+				install_options=$install_options' --admin "'$FRIENDICA_ADMIN_MAIL'" --tz "'$FRIENDICA_TZ'" --lang "'$FRIENDICA_LANG'"'
+				install=true
+			elif [ -f "/usr/src/config/local.ini.php" ]; then
+				echo "Installation with prepared local.ini.php"
+
+				install_options="-f /usr/src/local.ini.php"
+				install=true
+			fi
+
+			if [ "$install" = true ]; then
+				echo "Starting Friendica installation ..."
+				# TODO Let the database time to warm up - not winning a beauty contest
+				sleep 10s
+				run_as "cd /var/www/html; php /var/www/html/bin/console.php autoinstall $install_options"
+
+				# TODO Workaround because of a strange permission issue
+				rm -fr /var/www/html/view/smarty3/compiled
+
+				# load other config files (*.ini.php) to the config folder (currently only local.ini.php and addon.ini.php supported)
+				if [ -d "/usr/src/config" ]; then
+					rsync $rsync_options --ignore-existing /usr/src/config/ /var/www/html/config/
+				fi
+
+				echo "Installation finished"
+			else
+				echo "Running web-based installer on first connect!"
+			fi
+		# upgrade
+		else
+			echo "Upgrading Friendica ..."
+			run_as 'cd /var/www/html; php /var/www/html/bin/console.php dbstructure update'
+			echo "Upgrading finished"
+		fi
+	fi
+fi
+
+exec "$@"
diff --git a/2018.12-rc/fpm-alpine/upgrade.exclude b/2018.12-rc/fpm-alpine/upgrade.exclude
new file mode 100644
index 0000000..9c6c08f
--- /dev/null
+++ b/2018.12-rc/fpm-alpine/upgrade.exclude
@@ -0,0 +1,8 @@
+/.git/
+/photo/
+/proxy/
+/.htconfig.php
+/.htaccess
+/home.*
+/config/local.ini.php
+/config/addon.ini.php
\ No newline at end of file
diff --git a/2018.12-rc/fpm/Dockerfile b/2018.12-rc/fpm/Dockerfile
new file mode 100644
index 0000000..9106ac8
--- /dev/null
+++ b/2018.12-rc/fpm/Dockerfile
@@ -0,0 +1,106 @@
+# DO NOT EDIT: created by update.sh from Dockerfile-debian.template
+FROM php:7.1-fpm
+LABEL maintainer="Philipp Holzer <admin@philipp.info>"
+
+# entrypoint.sh and cron.sh dependencies
+RUN set -ex; \
+    \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+        rsync \
+        bzip2 \
+        git \
+# For mail() support
+        ssmtp \
+    ; \
+    rm -rf /var/lib/apt/lists/*;
+
+# install the PHP extensions we need
+# see https://friendi.ca/resources/requirements/
+RUN set -ex; \
+    \
+    savedAptMark="$(apt-mark showmanual)"; \
+    \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+        libxml2-dev \
+        mysql-client \
+        bash \
+        autoconf \
+        g++ \
+        make \
+        openssl \
+        libssl-dev \
+        libpng-dev \
+        libjpeg62-turbo-dev \
+        libtool \
+        libmcrypt4 \
+        libmcrypt-dev \
+        imagemagick \
+        libmagick++-dev \
+        libmemcached-dev \
+        libgraphicsmagick1-dev \
+        libfreetype6 \
+        libfreetype6-dev \
+        librsvg2-2 \
+        libcurl4-openssl-dev \
+        curl \
+    ; \
+    \
+    debMultiarch="$(dpkg-architecture --query DEB_BUILD_MULTIARCH)"; \
+    pecl install imagick-3.4.3; \
+        docker-php-ext-enable imagick; \
+        pecl clear-cache \
+    ; \
+    docker-php-ext-configure gd \
+        --with-gd \
+        --enable-gd-native-ttf \
+        --with-freetype-dir=/usr/include/ \
+        --with-png-dir=/usr/include/ \
+        --with-jpeg-dir=/usr/include/ \
+    ; \
+    docker-php-ext-install -j 4 curl pdo pdo_mysql xml gd zip opcache mbstring posix ctype json iconv mcrypt \
+    ; \
+# pecl will claim success even if one install fails, so we need to perform each install separately
+    pecl install memcached-3.0.4; \
+    pecl install redis-3.1.6; \
+    \
+    docker-php-ext-enable \
+        memcached \
+        redis \
+    ; \
+    \
+# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
+    apt-mark auto '.*' > /dev/null; \
+    apt-mark manual $savedAptMark; \
+    ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
+      | awk '/=>/ { print $3 }' \
+      | sort -u \
+      | xargs -r dpkg-query -S \
+      | cut -d: -f1 \
+      | sort -u \
+      | xargs -rt apt-mark manual; \
+    \
+    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+    rm -rf /var/lib/apt/lists/*
+
+RUN chown -R www-data:root /var/www; \
+    chmod -R g=u /var/www
+
+VOLUME /var/www/html
+WORKDIR /var/www/html
+
+
+RUN {\
+      echo sendmail_path = "/usr/sbin/sendmail -t -i" ;\
+    } > /usr/local/etc/php/conf.d/sendmail.ini;
+
+COPY *.sh upgrade.exclude /
+RUN chmod +x /*.sh
+
+ENV FRIENDICA_VERSION 2018.12-rc
+ENV FRIENDICA_ADDONS 2018.12-rc
+
+
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["php-fpm"]
diff --git a/2018.12-rc/fpm/cron.sh b/2018.12-rc/fpm/cron.sh
new file mode 100644
index 0000000..ce4d3ae
--- /dev/null
+++ b/2018.12-rc/fpm/cron.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+trap "break;exit" HUP INT TERM
+
+while [ ! -f /var/www/html/config/local.ini.php ]; do
+    sleep 1
+done
+
+# TODO let the database and the autoinstall time to complete - not winning a beauty contest
+sleep 15s
+
+php /var/www/html/bin/daemon.php -f start
diff --git a/2018.12-rc/fpm/entrypoint.sh b/2018.12-rc/fpm/entrypoint.sh
new file mode 100644
index 0000000..26bd8b6
--- /dev/null
+++ b/2018.12-rc/fpm/entrypoint.sh
@@ -0,0 +1,195 @@
+#!/bin/sh
+set -eu
+
+# run an command with the www-data user
+run_as() {
+	if [ "$(id -u)" -eq 0 ]; then
+		su - www-data -s /bin/sh -c "cd /var/www/html;$1"
+	else
+		sh -c "$1"
+	fi
+}
+
+# checks if the the first parameter is greater than the second parameter
+version_greater() {
+	[ "$(printf '%s\n' "$@" | sort -t '.' -n -k1,1 -k2,2 | head -n 1)" != "$1" ]
+}
+
+# clones the whole develop branch (Friendica and Addons)
+clone_develop() {
+	friendica_git="${FRIENDICA_VERSION}"
+	addons_git="${FRIENDICA_ADDONS}"
+
+	if echo "$friendica_git" | grep -Eq '^.*\-dev'; then
+		friendica_git="develop"
+	fi
+
+	if echo "$addons_git" | grep -Eq '^.*\-dev'; then
+		addons_git="develop"
+	fi
+
+	echo "Downloading Friendica from GitHub '${friendica_git}' ..."
+
+	# Removing the whole directory first
+	rm -fr /usr/src/friendica
+	sh -c "git clone -q -b ${friendica_git} https://github.com/friendica/friendica /usr/src/friendica"
+
+	mkdir /usr/src/friendica/addon
+	sh -c "git clone -q -b ${addons_git} https://github.com/friendica/friendica-addons /usr/src/friendica/addon"
+
+	echo "Download finished"
+
+	/usr/src/friendica/bin/composer.phar install --no-dev -d /usr/src/friendica
+}
+
+setup_ssmtp() {
+	if [ -n "${SITENAME+x}" ] && [ -n "${SMTP+x}" ] && [ "${SMTP}" != "localhost" ]; then
+		echo "Setup SSMTP for '$SITENAME' with '$SMTP' ..."
+
+		smtp_from=${SMTP_FROM:-no-reply}
+
+		# Setup SSMTP
+		sed -i "s/:root:/:${SITENAME}:/g" /etc/passwd
+		sed -i "s/:Linux\ User:/:${SITENAME}:/g" /etc/passwd
+
+		# add possible mail-senders
+		{
+		 echo "www-data:$smtp_from@$HOSTNAME:$SMTP" ;
+		 echo "root::$smtp_from@$HOSTNAME:$SMTP" ;
+		} > /etc/ssmtp/revaliases;
+
+		# replace ssmtp.conf settings
+		{
+		 echo "root=:$smtp_from@$HOSTNAME" ;
+		 echo "hostname=$HOSTNAME" ;
+		 echo "mailhub=$SMTP" ;
+		 echo "FromLineOverride=YES" ;
+		 if [ -n "${SMTP_TLS+x}" ]; then echo "UseTLS=$SMTP_TLS"; fi
+		 if [ -n "${SMTP_STARTTLS+x}" ]; then echo "UseSTARTTLS=$SMTP_STARTTLS"; fi
+		 if [ -n "${SMTP_AUTH_USER+x}" ]; then echo "AuthUser=$SMTP_AUTH_USER"; fi
+		 if [ -n "${SMTP_AUTH_PASS+x}" ]; then echo "AuthPass=$SMTP_AUTH_PASS";fi
+		 if [ -n "${SMTP_AUTH_METHOD+x}" ]; then echo "AuthMethod=$SMTP_AUTH_METHOD"; fi
+		} > /etc/ssmtp/ssmtp.conf
+
+		echo "Setup finished"
+	fi
+}
+
+# just check if we execute apache or php-fpm
+if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ]; then
+	installed_version="0.0.0.0"
+	if [ -f /var/www/html/VERSION ]; then
+		installed_version="$(cat /var/www/html/VERSION)"
+	fi
+
+	check=false
+	# cloning from git is just possible for develop or Release Candidats
+	if echo "$FRIENDICA_VERSION" | grep -Eq '^.*(\-dev|-rc)'; then
+		# just clone & check if it's a new install or upgrade
+		if [ "$installed_version" = "0.0.0.0" ] || [ "$FRIENDICA_UPGRADE" = "true" ]; then
+			clone_develop
+			image_version="$(cat /usr/src/friendica/VERSION)"
+			check=true
+		fi
+	else
+		image_version="$(cat /usr/src/friendica/VERSION)"
+
+		# check it just in case the version is greater
+		if version_greater "$image_version" "$installed_version"; then
+			check=true
+		fi
+
+		# no downgrading possible
+		if version_greater "$installed_version" "$image_version"; then
+			echo 'Can'\''t copy Friendica sources because the version of the data ($installed_version) is higher than the docker image ('$image_version')', 0
+			exit 1;
+		fi
+	fi
+
+	setup_ssmtp
+
+	if [ "$check" = true ]; then
+		echo "Initializing Friendica $image_version ..."
+
+		if [ "$installed_version" != "0.0.0.0" ]; then
+			echo "Upgrading Friendica from $installed_version ..."
+		fi
+
+		if [ "$(id -u)" -eq 0 ]; then
+			rsync_options="-rlDog --chown=www-data:www-data"
+		else
+			rsync_options="-rlD"
+		fi
+
+		rsync $rsync_options --delete --exclude-from=/upgrade.exclude /usr/src/friendica/ /var/www/html/
+
+		# In case there is no .htaccess, copy it from the default dist file
+		if [ ! -f "/var/www/html/.htaccess" ]; then
+			cp "/var/www/html/.htaccess-dist" "/var/www/html/.htaccess"
+		fi
+
+		if [ -d /var/www/html/view/smarty3 ]; then
+			chmod -R 777 /var/www/html/view/smarty3
+		fi
+		echo "Initializing finished"
+
+		# install
+		if [ "$installed_version" = "0.0.0.0" ]; then
+			echo "New Friendica instance"
+
+			install=false
+			if [ -n "${MYSQL_DATABASE+x}" ] && [ -n "${MYSQL_PASSWORD+x}" ] && [ -n "${MYSQL_HOST+x}" ] && [ -n "${MYSQL_USER+x}" -o -n "${MYSQL_USERNAME+x}" ] && [ -n ${FRIENDICA_ADMIN_MAIL+x} ]; then
+				echo "Installation with environment variables"
+
+				# TODO Bug in PHP Path for automatic installation
+				#FRIENDICA_PHP_PATH=${FRIENDICA_PHP_PATH:-/usr/local/php}
+				FRIENDICA_TZ=${FRIENDICA_TZ:-America/LosAngeles}
+				FRIENDICA_LANG=${FRIENDICA_LANG:-en}
+				MYSQL_PORT=${MYSQL_PORT:-3306}
+				if [ -n "${MYSQL_USER+x}" ]; then
+					MYSQL_USERNAMEFULL=${MYSQL_USER}
+				else
+					MYSQL_USERNAMEFULL=${MYSQL_USERNAME}
+				fi
+
+				# shellcheck disable=SC2016
+				install_options='-s --dbhost "'$MYSQL_HOST'" --dbport "'$MYSQL_PORT'" --dbdata "'$MYSQL_DATABASE'" --dbuser "'$MYSQL_USERNAMEFULL'" --dbpass "'$MYSQL_PASSWORD'"'
+
+				# shellcheck disable=SC2016
+				install_options=$install_options' --admin "'$FRIENDICA_ADMIN_MAIL'" --tz "'$FRIENDICA_TZ'" --lang "'$FRIENDICA_LANG'"'
+				install=true
+			elif [ -f "/usr/src/config/local.ini.php" ]; then
+				echo "Installation with prepared local.ini.php"
+
+				install_options="-f /usr/src/local.ini.php"
+				install=true
+			fi
+
+			if [ "$install" = true ]; then
+				echo "Starting Friendica installation ..."
+				# TODO Let the database time to warm up - not winning a beauty contest
+				sleep 10s
+				run_as "cd /var/www/html; php /var/www/html/bin/console.php autoinstall $install_options"
+
+				# TODO Workaround because of a strange permission issue
+				rm -fr /var/www/html/view/smarty3/compiled
+
+				# load other config files (*.ini.php) to the config folder (currently only local.ini.php and addon.ini.php supported)
+				if [ -d "/usr/src/config" ]; then
+					rsync $rsync_options --ignore-existing /usr/src/config/ /var/www/html/config/
+				fi
+
+				echo "Installation finished"
+			else
+				echo "Running web-based installer on first connect!"
+			fi
+		# upgrade
+		else
+			echo "Upgrading Friendica ..."
+			run_as 'cd /var/www/html; php /var/www/html/bin/console.php dbstructure update'
+			echo "Upgrading finished"
+		fi
+	fi
+fi
+
+exec "$@"
diff --git a/2018.12-rc/fpm/upgrade.exclude b/2018.12-rc/fpm/upgrade.exclude
new file mode 100644
index 0000000..9c6c08f
--- /dev/null
+++ b/2018.12-rc/fpm/upgrade.exclude
@@ -0,0 +1,8 @@
+/.git/
+/photo/
+/proxy/
+/.htconfig.php
+/.htaccess
+/home.*
+/config/local.ini.php
+/config/addon.ini.php
\ No newline at end of file
diff --git a/update.sh b/update.sh
index 0b2a40d..73ace35 100755
--- a/update.sh
+++ b/update.sh
@@ -41,6 +41,7 @@ variants=(
 )
 
 versions=(
+    2018.12-rc
     2018.12-dev
     2018.09
 )