Use precompiled PHP extensions for docker container

This should hopefully reduce the build times for cross compiled images, as we dont have to build extensions from source there.

.docker/partdb-entrypoint.sh

@@ -39,5 +39,10 @@ if [ -d /var/www/html/var/db ]; then
     fi
 fi
 
+# first arg is `-f` or `--some-option` (taken from https://github.com/docker-library/php/blob/master/8.2/bullseye/apache/docker-php-entrypoint)
+if [ "${1#-}" != "$1" ]; then
+	set -- apache2-foreground "$@"
+fi
+
 # Pass to the original entrypoint
 exec "$@"