chg: usr: make fancy og tags - and create a special one for battle sharing #4

Dockerfile

@@ -22,6 +22,8 @@ RUN install-php-extensions \
     apcu \
     sodium
 
+RUN apt-get update && apt-get install -y --no-install-recommends fonts-dejavu-core && rm -rf /var/lib/apt/lists/*
+
 RUN mv "$PHP_INI_DIR/php.ini-production" "$PHP_INI_DIR/php.ini"
 RUN printf '[opcache]\nopcache.enable=1\nopcache.memory_consumption=256\nopcache.max_accelerated_files=20000\nopcache.validate_timestamps=0\n' \
     > "$PHP_INI_DIR/conf.d/opcache.ini"