Question 112414 in Ubuntu Question posted in
The official Ubuntu documentation can be found here.

Ubuntu – Check if Release Tag is latest on GitHub Actions

I’ve release two tags, 0.1.0 and then 0.0.1. The latest release tag is 0.1.0.

How do I check inside the GitHub Action if the workflow was dispatched by the latest release?

name: Test
on:
  workflow_dispatch:
    branches:
      - main
  release:
    types: [published]
jobs:
  test:
    name: Test
    runs-on: ubuntu-20.04
    steps:
      - run: echo ${{ github.ref_name }}

${{ github.ref_name }} returns the tag version 0.1.0 or 0.0.1, I want to tag Docker images in action the same as GitHub: as image:latest only if the action was dispatched by 0.1.0, 0.1.0 is the latest even if 0.0.1 was dispatched later like displayed in the screenshot below:

enter image description here

Tags:

2

Answers


  1. 0

    Unfortunately, github context doesn’t provide this information.

    As a walkaround you can use git command to retrieve the latest version:

    git tag | sort --version-sort | tail -n1

    and then compare it to the current tag in the github actions context:

    ${{ github.ref_name }}

    example:

      - name: "Set latest tag"
    id: set-latest-tag
    run: echo "latest_tag=$(git tag | sort --version-sort | tail -n1)" >> $GITHUB_ENV

  - name: "Tag Docker image as latest"
    id: tag-as-latest
    if: ${{ github.ref_name == env.latest_tag }}
    run: |
      ...
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  2. 0

    To retrieve the Github release that is marked as latest by the maintainers (does not have to be chronologically or alphabetically the latest created git tag):

    - name: Export LATEST_TAG
  run: |
    echo "LATEST_TAG=$(curl -qsSL 
      -H "Accept: application/vnd.github+json" 
      -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" 
      -H "X-GitHub-Api-Version: 2022-11-28" 
      "${{ github.api_url }}/repos/${{ github.repository }}/releases/latest" 
    | jq -r .tag_name)" >> $GITHUB_ENV

- name: Do something when the current tag is the latest tag
  if: ${{ github.ref_name == env.LATEST_TAG }}
  run: ...

    This uses the tag_name attribute in the REST API response (docs)

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