ref-to-tag-action's Introduction

ref-to-tag Github Action

This action uses your Github context to extract your branch or tag name for use in other steps. It also formats the name to be compatible for use as the name of a docker container.

On a pull request, this will use the "head" branch of your PR. i.e. the branch that you are merging into the base branch.
On pushing a branch, it'll return the name of the branch you're pushing to.
On pushing a tag, it'll return the name of the tag.
Any slashes in the branch/tag names are converted to dots to make them valid with Docker but unlikely to collide with other branch names.

Branch -> Tag Examples:

- PR feature/my-branch -> feature.my-branch
- PR feature/my/weird/branchname -> feature.my.weird.branchname
- push to feature/my-branch -> feature.my-branch
- push to my-branch -> my-branch
- release/push of v1.0.5 tag -> v1.0.5

Note that you should always pass both the github.ref and github.head_ref, and the script is smart enough to know which to look at depending on which are filled.

Inputs

`ref`

Required Pass ${{ github.ref }}.

`head_ref`

Required Pass ${{ github.head_ref }}.

Note that if this is a push to a branch (and not a PR), the head_ref will be an empty string. That is fine, the action will know to ignore it.

Outputs

`tag`

The tag it parsed for you.

Example usage

See .github/workflows/example.yaml for a working example in this repo.

on: [pull_request, push]

jobs:
  get-ref-example:
    runs-on: ubuntu-latest
    name: get-ref-example
    steps:
    - name: Get the Ref
      id: get-ref
      uses: ankitvgupta/ref-to-tag-action@master
      with:
        ref: ${{ github.ref }}
        head_ref: ${{ github.head_ref }}
    - name: Get the tag
      run: echo "The tag was ${{ steps.get-ref.outputs.tag }}"

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