[Feature] Docker setup improvements

[mgogoulos]

For the Docker setup these need be done:

• make sure admin password is generated and not the default one is in place
• SECRET_KEY is auto-generated too
• Improve documentation, specifically how to use it
• improve how environment variables are retrieved

[mgogoulos]

@swiftugandan suggest more, and feel free to contribute ;)

[MikeyYeahYeah]

I would be more than happy to help with this effort. Just let me know :-)

[swiftugandan]

@MikeyYeahYeah please feel free to pick up any of the tasks, would be nice to have a docker deployment peer to bounce ideas off ;)

[EricGuic]

Hi, new here, and not a developper.
But a movie producer who try to self-host a maximum of tools I use on a daily basis.
So I own a Synology Nas, with Docker. I can test the native container install, or via Portainer if you need.
Best regards.

[mgogoulos]

Hi Eric, please do any testing you can make and report issues. Also would be great if you can write a blog post or similar documenting your experience!

[falense]

Hello,

depends_on lines cause trouble while trying to follow the basic setup instruction (https://github.com/mediacms-io/mediacms/blob/main/docs/admins_docs.md#3-docker-installation) for ubuntu20.04 with docker:

ERROR: The Compose file './docker-compose.yaml' is invalid because:
services.migrations.depends_on contains an invalid type, it should be an array

This might be relevant: moby/moby#30404

depends_on:
     redis:
        condition: service_healthy
      db:
        condition: service_healthy

Commenting them out leaves me with a working docker-compose file and "docker-compose up" starts setup.

The installation eventually fails with a lot of these:

requests.exceptions.ReadTimeout: UnixHTTPConnectionPool(host='localhost', port=None)

Suggestions?