Docker image alternative using Ubuntu (#2205)

* Docker image alternative using Ubuntu

Ubuntu seems to be faster, cf. e.g. PHPBench.
It is quite usual for Docker images to offer both a Debian/Ubuntu and an
Alpine version, so we could also do the same if there is any need.
Follow-up of https://github.com/FreshRSS/FreshRSS/pull/2202

* Only explicit use of Apache confs

Fix double-logging issue

* Explicit ServerTokens OS

Default Apache configuration in Ubuntu, which was removed when disabling all confs.
It is also the default Apache configuration in Alpine.

* Take advantage of syslog for actualization

Same than for Alpine
https://github.com/FreshRSS/FreshRSS/pull/2208/commits/43ab629e27799cb28ec28ad409a512e128d11e97

* COPY_SYSLOG_TO_STDERR

Same as https://github.com/FreshRSS/FreshRSS/pull/2213

* Update to libapache2-mod-php instead of php-fpm

* Default to Ubuntu

Ubuntu mod-php wins, being ~14% faster than Ubuntu php-fpm (which was ~300% faster than Alpine mod-php)

Docker/Dockerfile

@@ -1,28 +1,31 @@
-FROM alpine:3.9
+FROM ubuntu:18.10
 
 ENV TZ UTC
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 
-RUN apk add --no-cache \
-	apache2 php7-apache2 \
-	php7 php7-curl php7-gmp php7-intl php7-mbstring php7-xml php7-zip \
-	php7-ctype php7-dom php7-fileinfo php7-iconv php7-json php7-session php7-simplexml php7-xmlreader php7-zlib \
-	php7-pdo_sqlite php7-pdo_mysql php7-pdo_pgsql
+RUN apt update && \
+	apt install --no-install-recommends -y \
+	cron \
+	apache2 libapache2-mod-php \
+	php-curl php-intl php-mbstring php-xml php-zip \
+	php-sqlite3 php-mysql php-pgsql && \
+	rm -rf /var/lib/apt/lists/
 
-RUN mkdir -p /var/www/FreshRSS /run/apache2/
+RUN mkdir -p /var/www/FreshRSS /run/apache2/ /run/php/
 WORKDIR /var/www/FreshRSS
 
 COPY . /var/www/FreshRSS
-COPY ./Docker/*.Apache.conf /etc/apache2/conf.d/
-
-RUN 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$/s/^/#/" \ 
-		/etc/apache2/httpd.conf && \
-	sed -r -i "/^\s*#\s*LoadModule .*mod_(deflate|expires|headers|mime|setenvif).so$/s/^\s*#//" \ 
-		/etc/apache2/httpd.conf && \
-	sed -r -i "/^\s*(CustomLog|ErrorLog|Listen) /s/^/#/" \
-		/etc/apache2/httpd.conf && \
-	echo "17,37 * * * * su apache -s /bin/sh -c 'php /var/www/FreshRSS/app/actualize_script.php' 2>> /proc/1/fd/2 > /tmp/FreshRSS.log" >> \
+COPY ./Docker/*.Apache.conf /etc/apache2/sites-available/
+
+RUN a2dismod -f alias autoindex negotiation status && \
+	a2enmod deflate expires headers mime proxy_fcgi setenvif && \
+	a2disconf '*' && \
+	a2dissite '*' && \
+	a2ensite 'FreshRSS*'
+
+RUN sed -r -i "/^\s*(CustomLog|ErrorLog|Listen) /s/^/#/" /etc/apache2/apache2.conf && \
+	sed -r -i "/^\s*Listen /s/^/#/" /etc/apache2/ports.conf && \
+	echo "17,37 su apache -s /bin/sh -c 'php /var/www/FreshRSS/app/actualize_script.php' 2>> /proc/1/fd/2 > /tmp/FreshRSS.log" >> \
 		/var/spool/cron/crontabs/root
 
 ENV COPY_SYSLOG_TO_STDERR On
@@ -30,5 +33,6 @@ ENV CRON_MIN ''
 ENTRYPOINT ["./Docker/entrypoint.sh"]
 
 EXPOSE 80
-CMD ([ -z "$CRON_MIN" ] || crond -d 6) && \
-	exec httpd -D FOREGROUND
+CMD ([ -z "$CRON_MIN" ] || cron) && \
+	. /etc/apache2/envvars && \
+	exec apache2 -D FOREGROUND

Docker/Dockerfile-Alpine

@@ -0,0 +1,34 @@
+FROM alpine:3.9
+
+ENV TZ UTC
+
+RUN apk add --no-cache \
+	apache2 php7-apache2 \
+	php7 php7-curl php7-gmp php7-intl php7-mbstring php7-xml php7-zip \
+	php7-ctype php7-dom php7-fileinfo php7-iconv php7-json php7-session php7-simplexml php7-xmlreader php7-zlib \
+	php7-pdo_sqlite php7-pdo_mysql php7-pdo_pgsql
+
+RUN mkdir -p /var/www/FreshRSS /run/apache2/
+WORKDIR /var/www/FreshRSS
+
+COPY . /var/www/FreshRSS
+COPY ./Docker/*.Apache.conf /etc/apache2/conf.d/
+
+RUN 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$/s/^/#/" \ 
+		/etc/apache2/httpd.conf && \
+	sed -r -i "/^\s*#\s*LoadModule .*mod_(deflate|expires|headers|mime|setenvif).so$/s/^\s*#//" \ 
+		/etc/apache2/httpd.conf && \
+	sed -r -i "/^\s*(CustomLog|ErrorLog|Listen) /s/^/#/" \
+		/etc/apache2/httpd.conf && \
+	echo "17,37 * * * * su apache -s /bin/sh -c 'php /var/www/FreshRSS/app/actualize_script.php' 2>> /proc/1/fd/2 > /tmp/FreshRSS.log" >> \
+		/var/spool/cron/crontabs/root
+
+ENV COPY_SYSLOG_TO_STDERR On
+ENV CRON_MIN ''
+ENTRYPOINT ["./Docker/entrypoint.sh"]
+
+EXPOSE 80
+CMD ([ -z "$CRON_MIN" ] || crond -d 6) && \
+	exec httpd -D FOREGROUND

Docker/FreshRSS.Apache.conf

@@ -4,6 +4,7 @@ DocumentRoot /var/www/FreshRSS/p/
 CustomLog /dev/stdout combined
 ErrorLog /dev/stderr
 AllowEncodedSlashes On
+ServerTokens OS
 
 <Directory />
 	AllowOverride None