Chore: add more Docker Semver Tags

[RoboMagus]

Proposed change

This is a GH workflow change to add proper semantic versioning tags to the Docker build & push step.
Reasoning for the multiple tags is explained in this old Medium article.

After the recent breaking changes with the major version bump it became apparent that auto updating to the latest tag was not ideal, but manually updating after each patch release requires to much human input. Having SemVer Docker tags with multiple levels users can pin their config to has become common practice for many popular self-hosted docker services.
I hope that this PR will bring this practice to homepage as well.

Type of change

• New service widget
• Bug fix (non-breaking change which fixes an issue)
• New feature or enhancement (non-breaking change which adds functionality)
• Documentation only
• Other (please explain)

PR is not related to the functionality of the application itself, but the way it is built / distributed.

Checklist:

• If applicable, I have added corresponding documentation changes.
• If applicable, I have reviewed the feature / enhancement and / or service widget guidelines.
• I have checked that all code style checks pass using pre-commit hooks and linting checks.
• If applicable, I have tested my code for new features & regressions on both mobile & desktop devices, using the latest version of major browsers.

Note

None of these check are really applicable to the changes in this PR.
However I have tested the functionality in a test CI/CD run. See Extract Docker metadata step, docker tags sub menu.

[shamoon]

Thanks. Always a bit of a trial-and-error about GHA stuff, hope this works :)

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