refactor(Dockerfile): replace apache2 & php files by static config file.

Just as for the docker-entrypoint.sh, as the configuration is now
defined at build time and overriden at runtime strictly through
environment variables, it's not necessary anymore to capture config
file changes as they become immutable.

Author: thylong

Dockerfile

@@ -50,21 +50,6 @@ COPY --chmod=0755 docker-entrypoint.sh /usr/local/bin/
 
 HEALTHCHECK CMD curl -f http://localhost -A "HealthCheck" || exit 1
 
-# Enable compression
-RUN sed -i '/LoadModule mime_module/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/LoadModule deflate_module/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/AddOutputFilterByType text\/html/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/AddOutputFilterByType text\/plain/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/AddOutputFilterByType text\/xml/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/AddOutputFilterByType application\/javascript/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/AddOutputFilterByType text\/css/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/AddOutputFilterByType image\/svg\+xml/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/AddOutputFilterByType application\/x-font-ttf/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/AddOutputFilterByType font\/opentype/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/AddOutputFilterByType image\/jpeg/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/AddOutputFilterByType image\/png/s/^#//g' /etc/apache2/httpd.conf \
-    && sed -i '/AddOutputFilterByType image\/gif/s/^#//g' /etc/apache2/httpd.conf
-
 # Forward Apache access and error logs to Docker's log collector.
 # Optional last line adds extra verbosity with for example:
 # [ssl:info] [pid 33] [client 10.0.5.8:45542] AH01964: Connection to child 2 established (server your.domain:443)
@@ -73,11 +58,6 @@ RUN ln -sf /dev/stdout /var/www/logs/access.log \
  && ln -sf /dev/stderr /var/www/logs/ssl-access.log
 # && ln -sf /dev/stderr /var/www/logs/ssl-error.log
 
-# Enable mod_deflate for text compression
-RUN sed -i 's/#LoadModule deflate_module/LoadModule deflate_module/' /etc/apache2/httpd.conf \
-    && sed -i 's/#LoadModule filter_module/LoadModule filter_module/' /etc/apache2/httpd.conf \
-    && echo 'AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css application/javascript application/json' >> /etc/apache2/httpd.conf
-
 # Set console entry path
 WORKDIR /htdocs