RUN set -ex; \
    \
    a2enmod headers rewrite remoteip; \
    { \
        echo RemoteIPHeader X-Real-IP; \
        echo RemoteIPTrustedProxy 10.0.0.0/8; \
        echo RemoteIPTrustedProxy 172.16.0.0/12; \
        echo RemoteIPTrustedProxy 192.168.0.0/16; \
    } > $APACHE_CONFDIR/conf-available/remoteip.conf; \
    a2enconf remoteip

RUN set -ex; \
    APACHE_DOCUMENT_ROOT=/var/www/html/public; \
    sed -ri -e "s!/var/www/html!${APACHE_DOCUMENT_ROOT}!g" $APACHE_CONFDIR/sites-available/*.conf; \
    sed -ri -e "s!/var/www/!${APACHE_DOCUMENT_ROOT}!g" $APACHE_CONFDIR/apache2.conf $APACHE_CONFDIR/conf-available/*.conf