Container image tag action

A Github Action to bump an image version in ghcr.io, allowing separate versioning of the repo and multiple container images that are built within it.

The action only works with semantic versions. It is also only checks the latest commit for that, as it's designed to run on a PR merge to the main branch. Make sure to include the major/minor pattern (see inputs) in the PR title.

Inputs

image

(required) Path to the image within ghcr.io (<OWNER>/<IMAGE_NAME>)

minor-pattern

(default: #minor) Commit message pattern that indicates a minor version bump

major-pattern

(default: #major) Commit message pattern that indicates a major version bump

include-v

(default: false) Whether or not to include v prefix in the version

initial-tag

(default: 0.1.0) Initial tag to create on first image push or first semver

debug

(default: false) Enable debug logging

Outputs

image-tag

New version tag

Example usage

- name: Bump image version
  id: action
  uses: timberhill/container-image-tag-action@main
  with:
    image: ${{ env.IMAGE }}
  env:
    GITHUB_TOKEN: "${{ secrets.PAT }}"

- name: New image tag
  run: echo "${{ steps.action.outputs.image-tag }}"

A full example workflow is used in this repo: .github/workflows/tag-image.yaml