diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/apache/app/Dockerfile b/.examples/docker-compose/insecure/mariadb-cron-smtp/apache/app/Dockerfile
deleted file mode 100644
index 60c60c6..0000000
--- a/.examples/docker-compose/insecure/mariadb-cron-smtp/apache/app/Dockerfile
+++ /dev/null
@@ -1,12 +0,0 @@
-# Based on .exmples/dockerfiles/smtp/apache
-FROM friendica/server:apache
-
-# simple = using an smtp without any credentials (mostly in local networks)
-# custom = you need to set host, port, auth_options, authinfo (e.g. for GMX support)
-ENV SMTP_TYPE simple
-
-ENV SMTP_HOST smtp.example.org
-
-COPY *.sh /
-RUN chmod +x /*.sh
-RUN /smtp-config.sh
\ No newline at end of file
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/apache/app/smtp-config.sh b/.examples/docker-compose/insecure/mariadb-cron-smtp/apache/app/smtp-config.sh
deleted file mode 100644
index 9fa076d..0000000
--- a/.examples/docker-compose/insecure/mariadb-cron-smtp/apache/app/smtp-config.sh
+++ /dev/null
@@ -1,45 +0,0 @@
-#!/bin/sh
-set -eu
-
-IFS=\n
-
-SMTP_TYPE=${SMTP_TYPE:-simple}
-
-# config options
-SMTP_HOST=${SMTP_HOST:-'localhost'}
-SMTP_PORT=${SMTP_PORT:-'25'}
-SMTP_AUTH=${SMTP_AUTH:-'A p'}
-SMTP_TRUST_AUTH_MECH=${SMTP_TRUST_AUTH_MECH:-'EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN'}
-SMTP_AUTH_MECH=${SMTP_AUTH_MECH:-'EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN'}
-
-SMTP_USERNAME=${SMTP_USERNAME:-''}
-SMTP_PASSWORD=${SMTP_PASSWORD:-''}
-
-smtp_simple() {
-  sed -i '/MAILER_DEFINITIONS/i define(`SMART_HOST'\'',`'$SMTP_HOST''\'')dnl/' /etc/mail/sendmail.mc
-}
-
-smtp_custom() {
-  cd /etc/mail
-  mkdir -m 700 authinfo
-  cd authinfo/
-  echo 'Authinfo: "U:www-data" "I:'$SMTP_USERNAME'" "P:'$SMTP_PASSWORD'"' > auth_file
-  makemap hash auth < auth_file
-
-  sed -i '/MAILER_DEFINITIONS/i \
-define(`SMART_HOST'\'',`'$SMTP_HOST''\'')dnl \
-define(`RELAY_MAILER_ARGS'\'', `TCP '$SMTP_HOST' '$SMTP_PORT''\'')dnl \
-define(`ESMTP_MAILER_ARGS'\'', `TCP '$SMTP_HOST' '$SMTP_PORT''\'')dnl \
-define(`confAUTH_OPTIONS'\'', `'$SMTP_AUTH''\'')dnl \
-TRUST_AUTH_MECH(`'$SMTP_TRUST_AUTH_MECH''\'')dnl \
-define(`confAUTH_MECHANISMS'\'', `'$SMTP_AUTH_MECH''\'')dnl \
-FEATURE(`authinfo'\'',`hash -o /etc/mail/authinfo/auth.db'\'')dnl' /etc/mail/sendmail.mc
-}
-
-case $SMTP_TYPE in
-  simple) smtp_simple ;;
-  custom) smtp_custom ;;
-  *)
-    echo "Unknown SMTP-Type '$SMTP_TYPE'"
-    exit 1
-esac
\ No newline at end of file
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm-alpine/app/Dockerfile b/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm-alpine/app/Dockerfile
deleted file mode 100644
index dae8782..0000000
--- a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm-alpine/app/Dockerfile
+++ /dev/null
@@ -1,18 +0,0 @@
-# Based on .exmples/dockerfiles/smtp/fpm-alpine
-FROM friendica/server:fpm-alpine
-
-ENV SMTP_HOST smtp.example.org
-
-RUN set -ex; \
-    \
-    apk add --no-cache \
-        ssmtp \
-    ; \
-    # disable the current mailhub
-    sed -i "s|mailhub=|#mailhub= |g" /etc/ssmtp/ssmtp.conf; \
-    # enable the new mailhub
-    echo "mailhub=${SMTP_HOST:-localhost}" >> /etc/ssmtp/ssmtp.conf;
-
-# simple = using an smtp without any credentials (mostly in local networks)
-# custom = you need to set host, port, auth_options, authinfo (e.g. for GMX support)
-ENV SMTP_TYPE simple
\ No newline at end of file
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm/app/Dockerfile b/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm/app/Dockerfile
deleted file mode 100644
index fcb2911..0000000
--- a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm/app/Dockerfile
+++ /dev/null
@@ -1,12 +0,0 @@
-# Based on .exmples/dockerfiles/smtp/fpm
-FROM friendica/server:fpm
-
-# simple = using an smtp without any credentials (mostly in local networks)
-# custom = you need to set host, port, auth_options, authinfo (e.g. for GMX support)
-ENV SMTP_TYPE simple
-
-ENV SMTP_HOST smtp.example.org
-
-COPY *.sh /
-RUN chmod +x /*.sh
-RUN /smtp-config.sh
\ No newline at end of file
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm/app/smtp-config.sh b/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm/app/smtp-config.sh
deleted file mode 100644
index 9fa076d..0000000
--- a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm/app/smtp-config.sh
+++ /dev/null
@@ -1,45 +0,0 @@
-#!/bin/sh
-set -eu
-
-IFS=\n
-
-SMTP_TYPE=${SMTP_TYPE:-simple}
-
-# config options
-SMTP_HOST=${SMTP_HOST:-'localhost'}
-SMTP_PORT=${SMTP_PORT:-'25'}
-SMTP_AUTH=${SMTP_AUTH:-'A p'}
-SMTP_TRUST_AUTH_MECH=${SMTP_TRUST_AUTH_MECH:-'EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN'}
-SMTP_AUTH_MECH=${SMTP_AUTH_MECH:-'EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN'}
-
-SMTP_USERNAME=${SMTP_USERNAME:-''}
-SMTP_PASSWORD=${SMTP_PASSWORD:-''}
-
-smtp_simple() {
-  sed -i '/MAILER_DEFINITIONS/i define(`SMART_HOST'\'',`'$SMTP_HOST''\'')dnl/' /etc/mail/sendmail.mc
-}
-
-smtp_custom() {
-  cd /etc/mail
-  mkdir -m 700 authinfo
-  cd authinfo/
-  echo 'Authinfo: "U:www-data" "I:'$SMTP_USERNAME'" "P:'$SMTP_PASSWORD'"' > auth_file
-  makemap hash auth < auth_file
-
-  sed -i '/MAILER_DEFINITIONS/i \
-define(`SMART_HOST'\'',`'$SMTP_HOST''\'')dnl \
-define(`RELAY_MAILER_ARGS'\'', `TCP '$SMTP_HOST' '$SMTP_PORT''\'')dnl \
-define(`ESMTP_MAILER_ARGS'\'', `TCP '$SMTP_HOST' '$SMTP_PORT''\'')dnl \
-define(`confAUTH_OPTIONS'\'', `'$SMTP_AUTH''\'')dnl \
-TRUST_AUTH_MECH(`'$SMTP_TRUST_AUTH_MECH''\'')dnl \
-define(`confAUTH_MECHANISMS'\'', `'$SMTP_AUTH_MECH''\'')dnl \
-FEATURE(`authinfo'\'',`hash -o /etc/mail/authinfo/auth.db'\'')dnl' /etc/mail/sendmail.mc
-}
-
-case $SMTP_TYPE in
-  simple) smtp_simple ;;
-  custom) smtp_custom ;;
-  *)
-    echo "Unknown SMTP-Type '$SMTP_TYPE'"
-    exit 1
-esac
\ No newline at end of file
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/apache/db.env b/.examples/docker-compose/insecure/mariadb-cron/apache/db.env
similarity index 100%
rename from .examples/docker-compose/insecure/mariadb-cron-smtp/apache/db.env
rename to .examples/docker-compose/insecure/mariadb-cron/apache/db.env
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/apache/docker-compose.yml b/.examples/docker-compose/insecure/mariadb-cron/apache/docker-compose.yml
similarity index 82%
rename from .examples/docker-compose/insecure/mariadb-cron-smtp/apache/docker-compose.yml
rename to .examples/docker-compose/insecure/mariadb-cron/apache/docker-compose.yml
index 79e631e..779e0d4 100644
--- a/.examples/docker-compose/insecure/mariadb-cron-smtp/apache/docker-compose.yml
+++ b/.examples/docker-compose/insecure/mariadb-cron/apache/docker-compose.yml
@@ -12,7 +12,7 @@ services:
       - db.env
 
   app:
-    build: ./app
+    image: friendica/server:apache
     restart: always
     volumes:
       - friendica:/var/www/html
@@ -21,6 +21,7 @@ services:
       - MAILNAME=
       - TZ=
       - LANGUAGE=
+      - SMTP=
     env_file:
       - db.env
     depends_on:
@@ -30,7 +31,7 @@ services:
       - "80:80"
 
   cron:
-    build: ./app
+    image: friendica/server:apache
     restart: always
     volumes:
       - friendica:/var/www/html
@@ -39,6 +40,7 @@ services:
       - MAILNAME=
       - TZ=
       - LANGUAGE=
+      - SMTP=
     env_file:
       - db.env
     depends_on:
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm-alpine/db.env b/.examples/docker-compose/insecure/mariadb-cron/fpm-alpine/db.env
similarity index 100%
rename from .examples/docker-compose/insecure/mariadb-cron-smtp/fpm-alpine/db.env
rename to .examples/docker-compose/insecure/mariadb-cron/fpm-alpine/db.env
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm/docker-compose.yml b/.examples/docker-compose/insecure/mariadb-cron/fpm-alpine/docker-compose.yml
similarity index 83%
rename from .examples/docker-compose/insecure/mariadb-cron-smtp/fpm/docker-compose.yml
rename to .examples/docker-compose/insecure/mariadb-cron/fpm-alpine/docker-compose.yml
index 35b017b..e7ebf1f 100644
--- a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm/docker-compose.yml
+++ b/.examples/docker-compose/insecure/mariadb-cron/fpm-alpine/docker-compose.yml
@@ -12,7 +12,7 @@ services:
       - db.env
 
   app:
-    build: ./app
+    image: friendica/server:fpm-alpine
     restart: always
     volumes:
       - friendica:/var/www/html
@@ -21,6 +21,7 @@ services:
       - MAILNAME=
       - TZ=
       - LANGUAGE=
+      - SMTP=
     env_file:
       - db.env
     depends_on:
@@ -28,7 +29,7 @@ services:
     hostname: friendica.local
 
   cron:
-    build: ./app
+    image: friendica/server:fpm-alpine
     restart: always
     volumes:
       - friendica:/var/www/html
@@ -37,6 +38,7 @@ services:
       - MAILNAME=
       - TZ=
       - LANGUAGE=
+      - SMTP=
     env_file:
       - db.env
     depends_on:
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm-alpine/web/nginx.conf b/.examples/docker-compose/insecure/mariadb-cron/fpm-alpine/web/nginx.conf
similarity index 100%
rename from .examples/docker-compose/insecure/mariadb-cron-smtp/fpm-alpine/web/nginx.conf
rename to .examples/docker-compose/insecure/mariadb-cron/fpm-alpine/web/nginx.conf
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm/db.env b/.examples/docker-compose/insecure/mariadb-cron/fpm/db.env
similarity index 100%
rename from .examples/docker-compose/insecure/mariadb-cron-smtp/fpm/db.env
rename to .examples/docker-compose/insecure/mariadb-cron/fpm/db.env
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm-alpine/docker-compose.yml b/.examples/docker-compose/insecure/mariadb-cron/fpm/docker-compose.yml
similarity index 87%
rename from .examples/docker-compose/insecure/mariadb-cron-smtp/fpm-alpine/docker-compose.yml
rename to .examples/docker-compose/insecure/mariadb-cron/fpm/docker-compose.yml
index 35b017b..8a0f66f 100644
--- a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm-alpine/docker-compose.yml
+++ b/.examples/docker-compose/insecure/mariadb-cron/fpm/docker-compose.yml
@@ -12,7 +12,7 @@ services:
       - db.env
 
   app:
-    build: ./app
+    image: friendica/server:fpm
     restart: always
     volumes:
       - friendica:/var/www/html
@@ -28,7 +28,7 @@ services:
     hostname: friendica.local
 
   cron:
-    build: ./app
+    image: friendica/server:fpm
     restart: always
     volumes:
       - friendica:/var/www/html
diff --git a/.examples/docker-compose/insecure/mariadb-cron-smtp/fpm/web/nginx.conf b/.examples/docker-compose/insecure/mariadb-cron/fpm/web/nginx.conf
similarity index 100%
rename from .examples/docker-compose/insecure/mariadb-cron-smtp/fpm/web/nginx.conf
rename to .examples/docker-compose/insecure/mariadb-cron/fpm/web/nginx.conf
diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index 49d07c9..f66e763 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -85,7 +85,6 @@ COPY config/* /usr/src/config/
 COPY *.sh /
 RUN chmod +x /*.sh
 RUN chmod +x /usr/local/bin/*
-
 %%INSTALL_EXTRAS%%
 
 ENTRYPOINT ["/entrypoint.sh"]
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index 7d4d400..4ad1e58 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -95,7 +95,6 @@ COPY config/* /usr/src/config/
 COPY *.sh /
 RUN chmod +x /*.sh
 RUN chmod +x /usr/local/bin/*
-
 %%INSTALL_EXTRAS%%
 
 ENTRYPOINT ["/entrypoint.sh"]