How to get current branch within github actions

Question

I\'m building docker images with Github Actions and want to tags images with branch name, I found only GITHUB_REF variable, but it results in refs/heads/f

Answer 1

The GitHub Action FranzDiebold/github-env-vars-action exposes several useful environment variables, such as current branch name and their slug values. I made this action exactly for this use case.

Usage

steps:
  - uses: FranzDiebold/github-env-vars-action@v1.2.0
  - name: Print environment variables
    run: |
      echo "GITHUB_REPOSITORY_SLUG=$GITHUB_REPOSITORY_SLUG"
      echo "GITHUB_REPOSITORY_OWNER=$GITHUB_REPOSITORY_OWNER"
      echo "GITHUB_REPOSITORY_OWNER_SLUG=$GITHUB_REPOSITORY_OWNER_SLUG"
      echo "GITHUB_REPOSITORY_NAME=$GITHUB_REPOSITORY_NAME"
      echo "GITHUB_REPOSITORY_NAME_SLUG=$GITHUB_REPOSITORY_NAME_SLUG"
      echo "GITHUB_REF_SLUG=$GITHUB_REF_SLUG"
      echo "GITHUB_REF_NAME=$GITHUB_REF_NAME"
      echo "GITHUB_REF_NAME_SLUG=$GITHUB_REF_NAME_SLUG"
      echo "GITHUB_SHA_SHORT=$GITHUB_SHA_SHORT"

A demo for all Operating systems (Linux, macOS and Windows) is also available in the demo workflows file of the repository!