Replicate Docker version tag

This action replicates Docker version tag from like 1.2.3 to 1.2 and 1.

Usage

This action only generates Docker tags.

To build and push Docker images, you need to use another action like docker/build-push-action.

steps:
  - uses: actions/checkout@v2
  - id: docker-tag
    uses: yuya-takeyama/docker-tag-from-github-ref-action@v1
  - id: docker-tags
    uses: yuya-takeyama/replicate-docker-version-tag-action@v1
    with:
      image: user/app
      tag: ${{ steps.docker-tag.outputs.tag }}
  - name: Build and push
    uses: docker/build-push-action@v2
    with:
      push: true
      tags: ${{ steps.docker-tags.outputs.tags }}

With this example and given a tag 1.2.3, the generated tags are like below:

user/app:1.2.3,user/app:1.2,user/app:1

Tags are separated by , (a comma).

docker/build-push-action accepts the format.

Inputs

Name	Required	Default	Description
`tag`	`true`		Docker image tag indicates a semver (like `1.2.3`)
`image`	`false`		Docker image name (like `foo/bar` or `example.com/foo/bar`)
`separator`	`false`	,	Separator to of multiple images

Outputs

Name	Description
`tags`	Replicated tags