Improve Docker + compatibility Arch (#8299)

* Better comments in our Docker images
* Make `cli/access-permissions.sh` compatible with other Apache groups such as `http` for Linux Arch
* Better `/Docker/entrypoint.sh` supporting various Apache configuration paths (and slightly faster).
* Add test image for Linux Arch (not sure we will keep it)

See
* https://github.com/FreshRSS/FreshRSS/pull/8279#issuecomment-3620674818

6 files changed, 133 insertions, 27 deletions

diff --git a/Docker/Dockerfile b/Docker/Dockerfile
index 5da0e021a..9e9ae54a0 100644
--- a/Docker/Dockerfile
+++ b/Docker/Dockerfile
@@ -23,7 +23,6 @@ ARG FRESHRSS_VERSION
 ARG SOURCE_COMMIT
 
 LABEL \
-	org.opencontainers.image.authors="Alkarex" \
 	org.opencontainers.image.description="A self-hosted RSS feed aggregator" \
 	org.opencontainers.image.documentation="https://freshrss.github.io/FreshRSS/" \
 	org.opencontainers.image.licenses="AGPL-3.0" \
@@ -34,18 +33,23 @@ LABEL \
 	org.opencontainers.image.vendor="FreshRSS" \
 	org.opencontainers.image.version="$FRESHRSS_VERSION"
 
-RUN a2dismod -q -f alias autoindex negotiation status && \
+RUN \
+	# Disable unwanted Apache modules and configurations
+	a2dismod -q -f alias autoindex negotiation status && \
 	a2dismod -q auth_openidc && \
-	phpdismod calendar exif ffi ftp gettext mysqli posix readline shmop sockets sysvmsg sysvsem sysvshm xsl && \
-	a2enmod -q deflate expires filter headers mime remoteip setenvif && \
 	a2disconf -q '*' && \
 	a2dissite -q '*' && \
-	a2ensite -q 'FreshRSS*'
-
-RUN sed -r -i "/^\s*(CustomLog|ErrorLog|Listen) /s/^/#/" /etc/apache2/apache2.conf && \
+	sed -r -i "/^\s*(CustomLog|ErrorLog|Listen) /s/^/#/" /etc/apache2/apache2.conf && \
 	sed -r -i "/^\s*Listen /s/^/#/" /etc/apache2/ports.conf && \
-	# Disable built-in updates when using Docker, as the full image is supposed to be updated instead.
+	# Enable required Apache modules
+	a2enmod -q deflate expires filter headers mime remoteip setenvif && \
+	# Enable FreshRSS configuration for Apache
+	a2ensite -q 'FreshRSS*' && \
+	# Disable unwanted PHP modules
+	phpdismod calendar exif ffi ftp gettext mysqli posix readline shmop sockets sysvmsg sysvsem sysvshm xsl && \
+	# Disable built-in FreshRSS updates when using Docker, as the full image is supposed to be updated instead
 	sed -r -i "\\#disable_update#s#^.*#\t'disable_update' => true,#" ./config.default.php && \
+	# Configure cron job
 	touch /var/www/FreshRSS/Docker/env.txt && \
 	echo "7,37 * * * * . /var/www/FreshRSS/Docker/env.txt; \
 		su www-data -s /bin/sh -c 'php /var/www/FreshRSS/app/actualize_script.php' \
diff --git a/Docker/Dockerfile-Alpine b/Docker/Dockerfile-Alpine
index 0307d580e..1c688742f 100644
--- a/Docker/Dockerfile-Alpine
+++ b/Docker/Dockerfile-Alpine
@@ -20,7 +20,6 @@ ARG FRESHRSS_VERSION
 ARG SOURCE_COMMIT
 
 LABEL \
-	org.opencontainers.image.authors="Alkarex" \
 	org.opencontainers.image.description="A self-hosted RSS feed aggregator" \
 	org.opencontainers.image.documentation="https://freshrss.github.io/FreshRSS/" \
 	org.opencontainers.image.licenses="AGPL-3.0" \
@@ -31,17 +30,22 @@ LABEL \
 	org.opencontainers.image.vendor="FreshRSS" \
 	org.opencontainers.image.version="$FRESHRSS_VERSION"
 
-RUN rm -f /etc/apache2/conf.d/languages.conf /etc/apache2/conf.d/info.conf \
+RUN \
+	# Disable unwanted Apache modules and configurations
+	rm -f /etc/apache2/conf.d/languages.conf /etc/apache2/conf.d/info.conf \
 		/etc/apache2/conf.d/status.conf /etc/apache2/conf.d/userdir.conf && \
 	sed -r -i "/^\s*LoadModule .*mod_(alias|autoindex|negotiation|status).so$/s/^/#/" \
 		/etc/apache2/httpd.conf && \
-	sed -r -i "/^\s*#\s*LoadModule .*mod_(deflate|expires|filter|headers|mime|remoteip|setenvif).so$/s/^\s*#//" \
-		/etc/apache2/httpd.conf && \
 	sed -r -i "/^\s*(CustomLog|ErrorLog|Listen) /s/^/#/" \
 		/etc/apache2/httpd.conf && \
+	# Enable required Apache modules
+	sed -r -i "/^\s*#\s*LoadModule .*mod_(deflate|expires|filter|headers|mime|remoteip|setenvif).so$/s/^\s*#//" \
+		/etc/apache2/httpd.conf && \
+	# PHP configuration
 	if [ ! -f /usr/bin/php ]; then ln -s /usr/bin/php84 /usr/bin/php; else true; fi && \
-	# Disable built-in updates when using Docker, as the full image is supposed to be updated instead.
+	# Disable built-in FreshRSS updates when using Docker, as the full image is supposed to be updated instead
 	sed -r -i "\\#disable_update#s#^.*#\t'disable_update' => true,#" ./config.default.php && \
+	# Configure cron job
 	touch /var/www/FreshRSS/Docker/env.txt && \
 	echo "27,57 * * * * . /var/www/FreshRSS/Docker/env.txt; \
 		su apache -s /bin/sh -c 'php /var/www/FreshRSS/app/actualize_script.php' \
diff --git a/Docker/Dockerfile-Arch b/Docker/Dockerfile-Arch
new file mode 100644
index 000000000..44860826f
--- /dev/null
+++ b/Docker/Dockerfile-Arch
@@ -0,0 +1,69 @@
+# Test image for development
+# hadolint ignore=DL3006
+FROM archlinux
+
+ENV TZ=UTC
+SHELL ["/bin/bash", "-eo", "pipefail", "-c"]
+
+RUN pacman -Syu --noconfirm && pacman -S --noconfirm \
+	cronie \
+	apache php-apache \
+	php \
+	php-sqlite php-pgsql \
+	&& pacman -Scc --noconfirm
+
+RUN mkdir -p /var/www/FreshRSS /run/httpd/
+WORKDIR /var/www/FreshRSS
+
+COPY --chown=root:http . /var/www/FreshRSS
+COPY ./Docker/*.Apache.conf /etc/httpd/conf/conf.d/
+
+ARG FRESHRSS_VERSION
+ARG SOURCE_COMMIT
+
+LABEL \
+	org.opencontainers.image.description="A self-hosted RSS feed aggregator" \
+	org.opencontainers.image.documentation="https://freshrss.github.io/FreshRSS/" \
+	org.opencontainers.image.licenses="AGPL-3.0" \
+	org.opencontainers.image.revision="${SOURCE_COMMIT}" \
+	org.opencontainers.image.source="https://github.com/FreshRSS/FreshRSS" \
+	org.opencontainers.image.title="FreshRSS" \
+	org.opencontainers.image.url="https://freshrss.org/" \
+	org.opencontainers.image.vendor="FreshRSS" \
+	org.opencontainers.image.version="$FRESHRSS_VERSION"
+
+RUN \
+	# Disable unwanted Apache modules and configurations
+	sed -r -i "/^\s*LoadModule .*mod_(alias|autoindex|negotiation|status).so$/s/^/#/" /etc/httpd/conf/httpd.conf && \
+	sed -r -i "/^\s*Include .*\/(httpd-autoindex|httpd-languages|httpd-multilang-errordoc|httpd-userdir|proxy-html).conf$/s/^/#/" /etc/httpd/conf/httpd.conf && \
+	sed -r -i "/^\s*(CustomLog|ErrorLog|Listen) /s/^/#/" /etc/httpd/conf/httpd.conf && \
+	# Enable required Apache modules
+	sed -r -i "/^\s*#\s*LoadModule .*mod_(deflate|expires|filter|headers|mime|remoteip|setenvif).so$/s/^\s*#//" /etc/httpd/conf/httpd.conf && \
+	# Configure PHP for Apache
+	sed -r -i 's|^#?LoadModule mpm_event_module|#LoadModule mpm_event_module|' /etc/httpd/conf/httpd.conf && \
+	sed -r -i 's|^#?LoadModule mpm_prefork_module|LoadModule mpm_prefork_module|' /etc/httpd/conf/httpd.conf && \
+	sed -r -i '/LoadModule mpm_prefork_module.*/a LoadModule php_module modules/libphp.so\nAddHandler php-script .php' /etc/httpd/conf/httpd.conf && \
+	# Enable required PHP extensions
+	sed -r -i "/;extension=(curl|gmp|iconv|intl|pdo_mysql|pdo_pgsql|pdo_sqlite|zip)$/s/^;//" /etc/php/php.ini && \
+	# Disable built-in FreshRSS updates when using Docker, as the full image is supposed to be updated instead
+	sed -r -i "\\#disable_update#s#^.*#\t'disable_update' => true,#" ./config.default.php && \
+	touch /var/www/FreshRSS/Docker/env.txt && \
+	echo "17,47 * * * * . /var/www/FreshRSS/Docker/env.txt; \
+		su http -s /bin/sh -c 'php /var/www/FreshRSS/app/actualize_script.php' \
+		2>> /proc/1/fd/2 > /tmp/FreshRSS.log" > /etc/crontab.freshrss.default
+
+ENV COPY_LOG_TO_SYSLOG=On
+ENV COPY_SYSLOG_TO_STDERR=On
+ENV CRON_MIN=''
+ENV DATA_PATH=''
+ENV FRESHRSS_ENV=''
+ENV LISTEN=''
+ENV OIDC_ENABLED=''
+ENV TRUSTED_PROXY=''
+
+ENTRYPOINT ["./Docker/entrypoint.sh"]
+
+EXPOSE 80
+# hadolint ignore=DL3025
+CMD ([ -z "$CRON_MIN" ] || crond) && \
+	exec httpd -D FOREGROUND
diff --git a/Docker/Dockerfile-Newest b/Docker/Dockerfile-Newest
index cb959cf5b..a7c2c8265 100644
--- a/Docker/Dockerfile-Newest
+++ b/Docker/Dockerfile-Newest
@@ -1,3 +1,4 @@
+# Test image for development
 FROM alpine:edge
 
 ENV TZ=UTC
@@ -21,7 +22,6 @@ ARG FRESHRSS_VERSION
 ARG SOURCE_COMMIT
 
 LABEL \
-	org.opencontainers.image.authors="Alkarex" \
 	org.opencontainers.image.description="A self-hosted RSS feed aggregator" \
 	org.opencontainers.image.documentation="https://freshrss.github.io/FreshRSS/" \
 	org.opencontainers.image.licenses="AGPL-3.0" \
@@ -32,19 +32,24 @@ LABEL \
 	org.opencontainers.image.vendor="FreshRSS" \
 	org.opencontainers.image.version="$FRESHRSS_VERSION"
 
-RUN rm -f /etc/apache2/conf.d/languages.conf /etc/apache2/conf.d/info.conf \
+RUN \
+	# Disable unwanted Apache modules and configurations
+	rm -f /etc/apache2/conf.d/languages.conf /etc/apache2/conf.d/info.conf \
 		/etc/apache2/conf.d/status.conf /etc/apache2/conf.d/userdir.conf && \
 	sed -r -i "/^\s*LoadModule .*mod_(alias|autoindex|negotiation|status).so$/s/^/#/" \
 		/etc/apache2/httpd.conf && \
-	sed -r -i "/^\s*#\s*LoadModule .*mod_(deflate|expires|filter|headers|mime|remoteip|setenvif).so$/s/^\s*#//" \
-		/etc/apache2/httpd.conf && \
 	sed -r -i "/^\s*(CustomLog|ErrorLog|Listen) /s/^/#/" \
 		/etc/apache2/httpd.conf && \
 	mv /etc/apache2/conf.d/mod-auth-openidc.conf /etc/apache2/conf.d/mod-auth-openidc.conf.bak && \
+	# Enable required Apache modules
+	sed -r -i "/^\s*#\s*LoadModule .*mod_(deflate|expires|filter|headers|mime|remoteip|setenvif).so$/s/^\s*#//" \
+		/etc/apache2/httpd.conf && \
+	# PHP configuration
 	if [ ! -f /usr/bin/php ]; then ln -s /usr/bin/php85 /usr/bin/php; else true; fi && \
 	echo 'memory_limit = 256M' > /etc/php85/conf.d/10_memory.ini && \
-	# Disable built-in updates when using Docker, as the full image is supposed to be updated instead.
+	# Disable built-in FreshRSS updates when using Docker, as the full image is supposed to be updated instead.
 	sed -r -i "\\#disable_update#s#^.*#\t'disable_update' => true,#" ./config.default.php && \
+	# Configure cron job
 	touch /var/www/FreshRSS/Docker/env.txt && \
 	echo "27,57 * * * * . /var/www/FreshRSS/Docker/env.txt; \
 		su apache -s /bin/sh -c 'php /var/www/FreshRSS/app/actualize_script.php' \
diff --git a/Docker/Dockerfile-Oldest b/Docker/Dockerfile-Oldest
index f827adcaf..c76f896dd 100644
--- a/Docker/Dockerfile-Oldest
+++ b/Docker/Dockerfile-Oldest
@@ -1,3 +1,4 @@
+# Test image for development
 FROM alpine:3.16
 
 ENV TZ=UTC
@@ -20,7 +21,6 @@ ARG FRESHRSS_VERSION
 ARG SOURCE_COMMIT
 
 LABEL \
-	org.opencontainers.image.authors="Alkarex" \
 	org.opencontainers.image.description="A self-hosted RSS feed aggregator" \
 	org.opencontainers.image.documentation="https://freshrss.github.io/FreshRSS/" \
 	org.opencontainers.image.licenses="AGPL-3.0" \
@@ -31,18 +31,23 @@ LABEL \
 	org.opencontainers.image.vendor="FreshRSS" \
 	org.opencontainers.image.version="$FRESHRSS_VERSION"
 
-RUN rm -f /etc/apache2/conf.d/languages.conf /etc/apache2/conf.d/info.conf \
+RUN \
+	# Disable unwanted Apache modules and configurations
+	rm -f /etc/apache2/conf.d/languages.conf /etc/apache2/conf.d/info.conf \
 		/etc/apache2/conf.d/status.conf /etc/apache2/conf.d/userdir.conf && \
 	sed -r -i "/^\s*LoadModule .*mod_(alias|autoindex|negotiation|status).so$/s/^/#/" \
 		/etc/apache2/httpd.conf && \
-	sed -r -i "/^\s*#\s*LoadModule .*mod_(deflate|expires|filter|headers|mime|remoteip|setenvif).so$/s/^\s*#//" \
-		/etc/apache2/httpd.conf && \
 	sed -r -i "/^\s*(CustomLog|ErrorLog|Listen) /s/^/#/" \
 		/etc/apache2/httpd.conf && \
+	# Enable required Apache modules
+	sed -r -i "/^\s*#\s*LoadModule .*mod_(deflate|expires|filter|headers|mime|remoteip|setenvif).so$/s/^\s*#//" \
+		/etc/apache2/httpd.conf && \
+	# PHP configuration
 	if [ ! -f /usr/bin/php ]; then ln -s /usr/bin/php81 /usr/bin/php; else true; fi && \
 	echo 'memory_limit = 256M' > /etc/php81/conf.d/10_memory.ini && \
-	# Disable built-in updates when using Docker, as the full image is supposed to be updated instead.
+	# Disable built-in FreshRSS updates when using Docker, as the full image is supposed to be updated instead.
 	sed -r -i "\\#disable_update#s#^.*#\t'disable_update' => true,#" ./config.default.php && \
+	# Configure cron job
 	touch /var/www/FreshRSS/Docker/env.txt && \
 	echo "27,57 * * * * . /var/www/FreshRSS/Docker/env.txt; \
 		su apache -s /bin/sh -c 'php /var/www/FreshRSS/app/actualize_script.php' \
diff --git a/Docker/entrypoint.sh b/Docker/entrypoint.sh
index 88e00bbce..b7c06c672 100755
--- a/Docker/entrypoint.sh
+++ b/Docker/entrypoint.sh
@@ -8,17 +8,33 @@ find /etc/php*/ -type f -name php.ini -exec sed -i -E \
 	-e "\\#^;?post_max_size#s#^.*#post_max_size = 32M#" \
 	-e "\\#^;?upload_max_filesize#s#^.*#upload_max_filesize = 32M#" {} \;
 
+while read -r config_path _; do
+	if [ -f "$config_path" ]; then
+		APACHE_CONFIG="$config_path"
+		break
+	fi
+done <<EOF
+/etc/apache2/sites-available/FreshRSS.Apache.conf # Debian
+/etc/apache2/conf.d/FreshRSS.Apache.conf          # Alpine
+/etc/httpd/conf/conf.d/FreshRSS.Apache.conf       # Arch
+EOF
+
+if [ -z "$APACHE_CONFIG" ]; then
+	echo '❌ Apache configuration file not found!'
+	exit 11
+fi
+
 if [ -n "$LISTEN" ]; then
-	find /etc/apache2/ -type f -name FreshRSS.Apache.conf -exec sed -r -i "\\#^Listen#s#^.*#Listen $LISTEN#" {} \;
+	sed -r -i "\\#^Listen#s#^.*#Listen $LISTEN#" "$APACHE_CONFIG"
 fi
 
 if [ -n "$TRUSTED_PROXY" ]; then
 	if [ "$TRUSTED_PROXY" = "0" ]; then
 		# Disable RemoteIPHeader and RemoteIPInternalProxy
-		find /etc/apache2/ -type f -name FreshRSS.Apache.conf -exec sed -r -i "/^\s*RemoteIP.*$/s/^/#/" {} \;
+		sed -r -i "/^\s*RemoteIP.*$/s/^/#/" "$APACHE_CONFIG"
 	else
 		# Custom list for RemoteIPInternalProxy
-		find /etc/apache2/ -type f -name FreshRSS.Apache.conf -exec sed -r -i "\\#^\s*RemoteIPInternalProxy#s#^.*#\tRemoteIPInternalProxy $TRUSTED_PROXY#" {} \;
+		sed -r -i "\\#^\s*RemoteIPInternalProxy#s#^.*#\tRemoteIPInternalProxy $TRUSTED_PROXY#" "$APACHE_CONFIG"
 	fi
 fi
 
@@ -31,7 +47,10 @@ if [ -n "$OIDC_ENABLED" ] && [ "$OIDC_ENABLED" -ne 0 ]; then
 	# Debian
 	(which a2enmod >/dev/null && a2enmod -q auth_openidc) ||
 		# Alpine
-		(mv /etc/apache2/conf.d/mod-auth-openidc.conf.bak /etc/apache2/conf.d/mod-auth-openidc.conf && echo 'Enabling module auth_openidc.')
+		(mv /etc/apache2/conf.d/mod-auth-openidc.conf.bak /etc/apache2/conf.d/mod-auth-openidc.conf && echo 'Enabling module auth_openidc.') ||
+		# Misc.
+		(echo '❌ Failed to enable auth_openidc module!' && exit 12)
+
 	if [ -n "$OIDC_SCOPES" ]; then
 		# Compatibility with : as separator instead of space
 		OIDC_SCOPES=$(echo "$OIDC_SCOPES" | tr ':' ' ')