fix docker image tagging

[artivis]

Summary

Fix the docker image tagging in CI.

Details

Currently wikmd is not following the semver standard for git tags. This causes the metadata-action to silently fail and an empty docker tag is generated. This empty tag is passed on all the way down to docker run which then fails.

With this change, the CI will create docker tags base on,

• pr number e.g. linbreux/wikmd:pr-5
• git tag e.g. linbreux/wikmd:v1.6
• main branch -> linbreux/wikmd:edge

Checks

• In case of new feature, add short overview in docs/<corresponding file>
• Tested changes

[Linbreux]

Thanks for solving this!

[Linbreux]

I got an error while testing tags:

Run docker run -d --name wikmd -p 5000:5000 linbreux/wikmd:v1.6.1
  docker run -d --name wikmd -p 5000:5000 linbreux/wikmd:v1.6.1
  linbreux/wikmd:latest
  shell: /usr/bin/bash -e {0}
73d[2](https://github.com/Linbreux/wikmd/runs/6808444904?check_suite_focus=true#step:6:2)cd70ee877fa0[3](https://github.com/Linbreux/wikmd/runs/6808444904?check_suite_focus=true#step:6:3)8b6e877c2759d2eadb68d7ebe06225a0e66a2af9b7ca190
/home/runner/work/_temp/b40e9331-9d6d-464d-bf04-42381bbc0b10.sh: line 2: linbreux/wikmd:latest: No such file or directory
Error: Process completed with exit code 12[7](https://github.com/Linbreux/wikmd/runs/6808444904?check_suite_focus=true#step:6:8).

It seem to be a problem with linbreux/wikmd:latest. Building and testing the main branch works perfect.

[artivis]

Hey, sorry about that. It seems that the needs.build.outputs.wikmd_tag contains both tags and that doesn't play well with docker run of course. Not sure how to fix that but I'll try to give it a look 👍

[crazy-max]

@artivis Use ${{ steps.meta.outputs.version }} instead of ${{ steps.meta.outputs.tags }}

[artivis]

@artivis Use ${{ steps.meta.outputs.version }} instead of ${{ steps.meta.outputs.tags }}

Hey, the issue has been solved in #47.