diff --git a/2021.04/apache/Dockerfile b/2021.04/apache/Dockerfile
index 16d8fd2..16fa3a6 100644
--- a/2021.04/apache/Dockerfile
+++ b/2021.04/apache/Dockerfile
@@ -126,29 +126,24 @@ RUN set -ex;\
 
 ENV FRIENDICA_VERSION "2021.04"
 ENV FRIENDICA_ADDONS "2021.04"
+ENV FRIENDICA_DOWNLOAD_SHA256 "440d3a39cd701c3a4179f89fcb1a7197c3bf03f02c087c4a6e1bbe88932a1ce4"
+ENV FRIENDICA_DOWNLOAD_ADDONS_SHA256 "6c798634ce75d25bb71c80a00fcd3b6dd48be3ca2e233ca0f9ed80981cba83af"
 
 RUN set -ex; \
     curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz \
         "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz"; \
-    curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256"; \
-    sha256sum -c friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_SHA256} *friendica-full-${FRIENDICA_VERSION}.tar.gz" | sha256sum -c; \
     tar -xzf friendica-full-${FRIENDICA_VERSION}.tar.gz -C /usr/src/; \
     rm friendica-full-${FRIENDICA_VERSION}.tar.gz; \
-    rm friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
     mv -f /usr/src/friendica-full-${FRIENDICA_VERSION}/ /usr/src/friendica; \
     chmod 777 /usr/src/friendica/view/smarty3; \
     curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz \
             "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz"; \
-    curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256"; \
-    sha256sum -c friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_ADDONS_SHA256} *friendica-addons-${FRIENDICA_ADDONS}.tar.gz" | sha256sum -c; \
     mkdir -p /usr/src/friendica/proxy; \
     mkdir -p /usr/src/friendica/addon; \
     tar -xzf friendica-addons-${FRIENDICA_ADDONS}.tar.gz -C /usr/src/friendica/addon --strip-components=1; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256;
-
+    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz;
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/friendica/config/
 
diff --git a/2021.04/fpm-alpine/Dockerfile b/2021.04/fpm-alpine/Dockerfile
index ce59a67..87b4a91 100644
--- a/2021.04/fpm-alpine/Dockerfile
+++ b/2021.04/fpm-alpine/Dockerfile
@@ -128,29 +128,24 @@ VOLUME /var/www/html
 
 ENV FRIENDICA_VERSION "2021.04"
 ENV FRIENDICA_ADDONS "2021.04"
+ENV FRIENDICA_DOWNLOAD_SHA256 "440d3a39cd701c3a4179f89fcb1a7197c3bf03f02c087c4a6e1bbe88932a1ce4"
+ENV FRIENDICA_DOWNLOAD_ADDONS_SHA256 "6c798634ce75d25bb71c80a00fcd3b6dd48be3ca2e233ca0f9ed80981cba83af"
 
 RUN set -ex; \
     curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz \
         "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz"; \
-    curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256"; \
-    sha256sum -c friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_SHA256} *friendica-full-${FRIENDICA_VERSION}.tar.gz" | sha256sum -c; \
     tar -xzf friendica-full-${FRIENDICA_VERSION}.tar.gz -C /usr/src/; \
     rm friendica-full-${FRIENDICA_VERSION}.tar.gz; \
-    rm friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
     mv -f /usr/src/friendica-full-${FRIENDICA_VERSION}/ /usr/src/friendica; \
     chmod 777 /usr/src/friendica/view/smarty3; \
     curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz \
             "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz"; \
-    curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256"; \
-    sha256sum -c friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_ADDONS_SHA256} *friendica-addons-${FRIENDICA_ADDONS}.tar.gz" | sha256sum -c; \
     mkdir -p /usr/src/friendica/proxy; \
     mkdir -p /usr/src/friendica/addon; \
     tar -xzf friendica-addons-${FRIENDICA_ADDONS}.tar.gz -C /usr/src/friendica/addon --strip-components=1; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256;
-
+    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz;
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/friendica/config/
 
diff --git a/2021.04/fpm/Dockerfile b/2021.04/fpm/Dockerfile
index 596c1a8..f955187 100644
--- a/2021.04/fpm/Dockerfile
+++ b/2021.04/fpm/Dockerfile
@@ -117,29 +117,24 @@ VOLUME /var/www/html
 
 ENV FRIENDICA_VERSION "2021.04"
 ENV FRIENDICA_ADDONS "2021.04"
+ENV FRIENDICA_DOWNLOAD_SHA256 "440d3a39cd701c3a4179f89fcb1a7197c3bf03f02c087c4a6e1bbe88932a1ce4"
+ENV FRIENDICA_DOWNLOAD_ADDONS_SHA256 "6c798634ce75d25bb71c80a00fcd3b6dd48be3ca2e233ca0f9ed80981cba83af"
 
 RUN set -ex; \
     curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz \
         "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz"; \
-    curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256"; \
-    sha256sum -c friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_SHA256} *friendica-full-${FRIENDICA_VERSION}.tar.gz" | sha256sum -c; \
     tar -xzf friendica-full-${FRIENDICA_VERSION}.tar.gz -C /usr/src/; \
     rm friendica-full-${FRIENDICA_VERSION}.tar.gz; \
-    rm friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
     mv -f /usr/src/friendica-full-${FRIENDICA_VERSION}/ /usr/src/friendica; \
     chmod 777 /usr/src/friendica/view/smarty3; \
     curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz \
             "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz"; \
-    curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256"; \
-    sha256sum -c friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_ADDONS_SHA256} *friendica-addons-${FRIENDICA_ADDONS}.tar.gz" | sha256sum -c; \
     mkdir -p /usr/src/friendica/proxy; \
     mkdir -p /usr/src/friendica/addon; \
     tar -xzf friendica-addons-${FRIENDICA_ADDONS}.tar.gz -C /usr/src/friendica/addon --strip-components=1; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256;
-
+    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz;
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/friendica/config/
 
diff --git a/2021.07/apache/Dockerfile b/2021.07/apache/Dockerfile
index e1ca9ef..e0e5903 100644
--- a/2021.07/apache/Dockerfile
+++ b/2021.07/apache/Dockerfile
@@ -126,29 +126,24 @@ RUN set -ex;\
 
 ENV FRIENDICA_VERSION "2021.07"
 ENV FRIENDICA_ADDONS "2021.07"
+ENV FRIENDICA_DOWNLOAD_SHA256 "d57ebb33ff733f0ad023ad63e8992d8f61cec06363b951d00f1452760eeeda12"
+ENV FRIENDICA_DOWNLOAD_ADDONS_SHA256 "9752046c5af1003338a668683b24476cfb3f8dfeaef466703492a0883581c790"
 
 RUN set -ex; \
     curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz \
         "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz"; \
-    curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256"; \
-    sha256sum -c friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_SHA256} *friendica-full-${FRIENDICA_VERSION}.tar.gz" | sha256sum -c; \
     tar -xzf friendica-full-${FRIENDICA_VERSION}.tar.gz -C /usr/src/; \
     rm friendica-full-${FRIENDICA_VERSION}.tar.gz; \
-    rm friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
     mv -f /usr/src/friendica-full-${FRIENDICA_VERSION}/ /usr/src/friendica; \
     chmod 777 /usr/src/friendica/view/smarty3; \
     curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz \
             "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz"; \
-    curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256"; \
-    sha256sum -c friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_ADDONS_SHA256} *friendica-addons-${FRIENDICA_ADDONS}.tar.gz" | sha256sum -c; \
     mkdir -p /usr/src/friendica/proxy; \
     mkdir -p /usr/src/friendica/addon; \
     tar -xzf friendica-addons-${FRIENDICA_ADDONS}.tar.gz -C /usr/src/friendica/addon --strip-components=1; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256;
-
+    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz;
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/friendica/config/
 
diff --git a/2021.07/fpm-alpine/Dockerfile b/2021.07/fpm-alpine/Dockerfile
index df43b75..e86ddd4 100644
--- a/2021.07/fpm-alpine/Dockerfile
+++ b/2021.07/fpm-alpine/Dockerfile
@@ -128,29 +128,24 @@ VOLUME /var/www/html
 
 ENV FRIENDICA_VERSION "2021.07"
 ENV FRIENDICA_ADDONS "2021.07"
+ENV FRIENDICA_DOWNLOAD_SHA256 "d57ebb33ff733f0ad023ad63e8992d8f61cec06363b951d00f1452760eeeda12"
+ENV FRIENDICA_DOWNLOAD_ADDONS_SHA256 "9752046c5af1003338a668683b24476cfb3f8dfeaef466703492a0883581c790"
 
 RUN set -ex; \
     curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz \
         "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz"; \
-    curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256"; \
-    sha256sum -c friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_SHA256} *friendica-full-${FRIENDICA_VERSION}.tar.gz" | sha256sum -c; \
     tar -xzf friendica-full-${FRIENDICA_VERSION}.tar.gz -C /usr/src/; \
     rm friendica-full-${FRIENDICA_VERSION}.tar.gz; \
-    rm friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
     mv -f /usr/src/friendica-full-${FRIENDICA_VERSION}/ /usr/src/friendica; \
     chmod 777 /usr/src/friendica/view/smarty3; \
     curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz \
             "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz"; \
-    curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256"; \
-    sha256sum -c friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_ADDONS_SHA256} *friendica-addons-${FRIENDICA_ADDONS}.tar.gz" | sha256sum -c; \
     mkdir -p /usr/src/friendica/proxy; \
     mkdir -p /usr/src/friendica/addon; \
     tar -xzf friendica-addons-${FRIENDICA_ADDONS}.tar.gz -C /usr/src/friendica/addon --strip-components=1; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256;
-
+    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz;
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/friendica/config/
 
diff --git a/2021.07/fpm/Dockerfile b/2021.07/fpm/Dockerfile
index a8b7aa9..da0df32 100644
--- a/2021.07/fpm/Dockerfile
+++ b/2021.07/fpm/Dockerfile
@@ -117,29 +117,24 @@ VOLUME /var/www/html
 
 ENV FRIENDICA_VERSION "2021.07"
 ENV FRIENDICA_ADDONS "2021.07"
+ENV FRIENDICA_DOWNLOAD_SHA256 "d57ebb33ff733f0ad023ad63e8992d8f61cec06363b951d00f1452760eeeda12"
+ENV FRIENDICA_DOWNLOAD_ADDONS_SHA256 "9752046c5af1003338a668683b24476cfb3f8dfeaef466703492a0883581c790"
 
 RUN set -ex; \
     curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz \
         "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz"; \
-    curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256"; \
-    sha256sum -c friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_SHA256} *friendica-full-${FRIENDICA_VERSION}.tar.gz" | sha256sum -c; \
     tar -xzf friendica-full-${FRIENDICA_VERSION}.tar.gz -C /usr/src/; \
     rm friendica-full-${FRIENDICA_VERSION}.tar.gz; \
-    rm friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \
     mv -f /usr/src/friendica-full-${FRIENDICA_VERSION}/ /usr/src/friendica; \
     chmod 777 /usr/src/friendica/view/smarty3; \
     curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz \
             "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz"; \
-    curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256 \
-        "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256"; \
-    sha256sum -c friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256; \
+    echo "${FRIENDICA_DOWNLOAD_ADDONS_SHA256} *friendica-addons-${FRIENDICA_ADDONS}.tar.gz" | sha256sum -c; \
     mkdir -p /usr/src/friendica/proxy; \
     mkdir -p /usr/src/friendica/addon; \
     tar -xzf friendica-addons-${FRIENDICA_ADDONS}.tar.gz -C /usr/src/friendica/addon --strip-components=1; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz; \
-    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256;
-
+    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz;
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/friendica/config/
 
diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index 5c68752..d282e30 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -127,8 +127,8 @@ VOLUME /var/www/html
 
 ENV FRIENDICA_VERSION "%%VERSION%%"
 ENV FRIENDICA_ADDONS "%%VERSION%%"
+%%DOWNLOAD_SHA256%%
 %%INSTALL_EXTRAS%%
-
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/friendica/config/
 
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index 0c21c34..d814ff9 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -116,8 +116,8 @@ VOLUME /var/www/html
 
 ENV FRIENDICA_VERSION "%%VERSION%%"
 ENV FRIENDICA_ADDONS "%%VERSION%%"
+%%DOWNLOAD_SHA256%%
 %%INSTALL_EXTRAS%%
-
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/friendica/config/
 
diff --git a/update.sh b/update.sh
index dbbd183..e78bf85 100755
--- a/update.sh
+++ b/update.sh
@@ -82,7 +82,7 @@ declare -A pecl_versions=(
 )
 
 declare -A install_extras=(
-  ['stable']='\nRUN set -ex; \\\n    curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz \\\n        "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz"; \\\n    curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256 \\\n        "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256"; \\\n    sha256sum -c friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \\\n    tar -xzf friendica-full-${FRIENDICA_VERSION}.tar.gz -C /usr/src/; \\\n    rm friendica-full-${FRIENDICA_VERSION}.tar.gz; \\\n    rm friendica-full-${FRIENDICA_VERSION}.tar.gz.sum256; \\\n    mv -f /usr/src/friendica-full-${FRIENDICA_VERSION}/ /usr/src/friendica; \\\n    chmod 777 /usr/src/friendica/view/smarty3; \\\n    curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz \\\n            "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz"; \\\n    curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256 \\\n        "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256"; \\\n    sha256sum -c friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256; \\\n    mkdir -p /usr/src/friendica/proxy; \\\n    mkdir -p /usr/src/friendica/addon; \\\n    tar -xzf friendica-addons-${FRIENDICA_ADDONS}.tar.gz -C /usr/src/friendica/addon --strip-components=1; \\\n    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz; \\\n    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz.sum256;'
+  ['stable']='\nRUN set -ex; \\\n    curl -fsSL -o friendica-full-${FRIENDICA_VERSION}.tar.gz \\\n        "https://files.friendi.ca/friendica-full-${FRIENDICA_VERSION}.tar.gz"; \\\n    echo "${FRIENDICA_DOWNLOAD_SHA256} *friendica-full-${FRIENDICA_VERSION}.tar.gz" \| sha256sum -c; \\\n    tar -xzf friendica-full-${FRIENDICA_VERSION}.tar.gz -C /usr/src/; \\\n    rm friendica-full-${FRIENDICA_VERSION}.tar.gz; \\\n    mv -f /usr/src/friendica-full-${FRIENDICA_VERSION}/ /usr/src/friendica; \\\n    chmod 777 /usr/src/friendica/view/smarty3; \\\n    curl -fsSL -o friendica-addons-${FRIENDICA_ADDONS}.tar.gz \\\n            "https://files.friendi.ca/friendica-addons-${FRIENDICA_ADDONS}.tar.gz"; \\\n    echo "${FRIENDICA_DOWNLOAD_ADDONS_SHA256} *friendica-addons-${FRIENDICA_ADDONS}.tar.gz" \| sha256sum -c; \\\n    mkdir -p /usr/src/friendica/proxy; \\\n    mkdir -p /usr/src/friendica/addon; \\\n    tar -xzf friendica-addons-${FRIENDICA_ADDONS}.tar.gz -C /usr/src/friendica/addon --strip-components=1; \\\n    rm friendica-addons-${FRIENDICA_ADDONS}.tar.gz;'
   ['develop']=''
 )
 
@@ -103,6 +103,16 @@ function is_hotfix() {
   [[ "$1" =~ ^.*-[[:digit:]]+$ ]]
 }
 
+function get_sha256_string() {
+  install_type="$1"
+  version="${2,,}"
+  if [[ $install_type == "develop" ]]; then
+    echo ""
+  else
+    echo "ENV FRIENDICA_DOWNLOAD_SHA256 \"$(curl -fsSL https://files.friendi.ca/friendica-full-${version}.tar.gz.sum256 | cut -d' ' -f1)\"\nENV FRIENDICA_DOWNLOAD_ADDONS_SHA256 \"$(curl -fsSL https://files.friendi.ca/friendica-addons-${version}.tar.gz.sum256 | cut -d' ' -f1)\""
+  fi
+}
+
 function create_variant() {
   dockerName=${1,,}
   dir="$dockerName/$variant"
@@ -129,6 +139,7 @@ function create_variant() {
     s/%%VERSION%%/'"${2:-${1}}"'/g;
     s/%%CMD%%/'"${cmd[$variant]}"'/g;
     s|%%VARIANT_EXTRAS%%|'"${extras[$variant]}"'|g;
+    s|%%DOWNLOAD_SHA256%%|'"$(get_sha256_string $install_type ${2:-${1}})"'|g;
     s|%%INSTALL_EXTRAS%%|'"${install_extras[$install_type]}"'|g;
     s/%%APCU_VERSION%%/'"${pecl_versions[APCu]}"'/g;
     s/%%IMAGICK_VERSION%%/'"${pecl_versions[imagick]}"'/g;