Add documentation for building pre-release dockers

[Joly0]

It would be great ti have some documentation on how to build a docker image based on a pre-release. A normal docker build produces an image based of version 0.4.4 (currently latest), and i would like to try the pre-reelases in a docker environment.

Otherwise it would be great to have pre-built pre-release docker images ready to run.

[ItsNiceCraft]

If you just want to test the pre releases, you can build it yourself:

wget https://github.com/Lodestone-Team/lodestone_core/archive/refs/tags/v0.5.0-beta.3.zip
unzip v0.5.0-beta.3.zip
cd v0.5.0-beta.3
docker build -t lodestone_core .

Then docker run lodestone_core with your flags

I might make a Pull Request adding pre release prebuilt docker containers to the registry as well.

[Joly0]

Hm, i am trying to get lodestone atom working in docker, and i have already tried your attempt before, but that doesnt seem to work. Its still showing as 0.4.4 and i cant use the provided commands from the docs