Build and publish changed Docker image for multiple platforms GitHub Action

An action that examines which paths were modified by pushed commits and determines which images should be built and published.

Uses buildx under the hood for building multi platform images.

Usage

If username or password inputs are not provided, images will not be pushed to DockerHub.

- name: Checkout code
  uses: actions/checkout@v2
- name: Publish changed images
  uses: dawidd6/action-docker-publish-changed@v3
  with:
    username: ${{secrets.USER}}
    password: ${{secrets.PASS}}
    platforms: linux/amd64,linux/arm64,linux/arm
    tag: latest