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GitHub Action for Determining a docker image tag

GitHub Action implementation for determining the docker image tag from github repo properties.

  • This will get the tag name "latest" for devel, main or master branches.
  • It will otherwise use the basename - which should be either a tag name or branch name.

The output of this will be "latest" for a main branch - master, main and devel, or git tag name/git branch name in other cases.

Usage

Use with GitHub Actions

Example: .github/workflows/CI.yml

name: "CI"
on:
  push:
    branches:
      - devel
  pull_request:
jobs:
  build_images:
    name: "Build Images"
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Determine tag
        id: get_tag
        uses: MasterOfMalt/Atom.DevOps.GitHubActions/Docker_Image_GetTag@v1

      - name: echo tag_name
        run: echo "tag=${{ steps.get_tag.outputs.tag_name }}"

Outputs:

tag_name: "tag to use for the docker image"

See it in practice

You can find a working and not working PR here