enabling the apache module remoteip

[JonBendtsen]

enabling the apache module remoteip will partly fix issue #2

Besides this change, we should probably have some documentation stating how to create a remoteip.conf file which should be bind mounted at /etc/apache2/mods-enabled.

Contents should be something like:

RemoteIPHeader X-Forwarded-For

It is also entirely possible to bind mount another text file named remoteip.load with this content

LoadModule remoteip_module /usr/lib/apache2/modules/mod_remoteip.so

If that is done, then we don't even need this merge request.

But we still need some documentation stating how to do it

[JonBendtsen]

I ended up going for 3 individual files that I would then just mount into the apache config directories.

    - '/home/{{ username }}/dolibarr_apache_config_files/remoteip.load:/etc/apache2/mods-enabled/remoteip.load:ro'
    - '/home/{{ username }}/dolibarr_apache_config_files/remoteip.conf:/etc/apache2/mods-enabled/remoteip.conf:ro'
    - '/home/{{ username }}/dolibarr_apache_config_files/servername.conf:/etc/apache2/conf-enabled/servername.conf:ro'

I've tested it and it works great :-)