Update documentation and provide examples

Looking at various discussions regarding problems with installing Friendica using the docker images I believe updating the documentation and providing out-of-the-box files for docker-compose may solve a lot of these problems.

Based on the different setups one may choose I suggest to provide how-tos and files necessary for:

- Friendica Apache Image (with Caddy Reverse Proxy)
- Friendica Apache Image (with Nginx Reverse Proxy)
- Friendica fpm Image with Caddy Web Server (and Caddy Reverse Proxy)
- Friendica fpm Image with Nginx Webserver (and Nginx Reverse Proxy)

@m33m33, do you think we shall also add Apache as Reverse Proxy?

I will also share my setup with an Nginx Reverse Proxy and the Friendica fpm image plus the owasp/modsecurity-crs:nginx replacing the web server.

No specific file, test, or entry point is named. Start by locating the existing Friendica Docker documentation and compose configuration, then map the four requested Apache, FPM, Caddy, and Nginx setups. Done means the documented how-tos and out-of-the-box compose files cover those setups, including the proposed reverse-proxy arrangements.

Written by the indexing model from the issue text.