README.md

mirror-docker-tags-action

This action insert a matrix variable that contains all the tags that needs to be updated.

Inputs

from

Required The repository and tags to mirror, example "ubuntu[20.10,latest],alpine[latest]".

to

Required The repository owner to create the new tags (GITHUB_REPOSITORY_OWNER by default).

extra-registry

Optional By default only created tags to docker hub, you can add an extra registry, example "ghcr.io"

allowed-platforms

Optional Comma separate list for platforms to return.

updateAll

Optional Boolean that indicates if all the tags needs to be updated, if false only updates tags that are new or has recently being updated.

Outputs

matrix

A matrix that can be used for other jobs

{ include: [
    base_img : ubuntu,
    tags:  repo/ubuntu:latest,repo/ubuntu:20.10
    platforms:  Linux/amd64,Linux/arm/v7
]}

Example usage

jobs:
  setup-matrix:
    runs-on: ubuntu-latest
    steps:
      - name: Get missing tags
        id: tags
        uses: s6on/mirror-docker-tags-action@v1.0.0
        with:
          from: alpine[latest,3],debian[latest,11,11-slim],ubuntu[latest,20.04,18.04]
          to: ${{ github.repository_owner }}
          extra-registry: ghcr.io
          updateAll: ${{ github.event_name != 'schedule' }}
    outputs:
      matrix: ${{ steps.tags.outputs.matrix }}
  build-push:
    runs-on: ubuntu-latest
    needs: setup-matrix
    if: ${{ needs.setup-matrix.outputs.matrix }}
    strategy:
      fail-fast: false
      matrix: ${{ fromJson(needs.setup-matrix.outputs.matrix) }}
    name: ${{ matrix.base_img }}