author: Sebastian Tobie
description: pushes images via skopeo to an target
name: push images

inputs:
  tags:
    required: true
    description: tags that are send to the registry
  registry:
    required: true
    description: "the desired registry, default is the forgejo instance"
  path:
    required: true
    description: "path under the registry for the image"
  image:
    required: true
    description: |
      the image that is copied with the storage.
      Examples:

      - dir:image
      - container-storage:image:tag
      - docker://registry/path:tag
  username:
    default: USER
    description: "Username in case its important"
  password:
      required: true
      description: "password for authentication"

runs:
  using: composite
  steps:
    - name: login
      shell: sh
      run: |
        skopeo login -u "${{ inputs.username }}" -p "${{ inputs.password }}" ${{ inputs.registry }}
      env:
        REGISTRY_AUTH_FILE: ${{env.RUNNER_TEMP}}/auth.json
    - name: skopeo copy
      shell: sh
      env:
        REGISTRY_AUTH_FILE: ${{env.RUNNER_TEMP}}/auth.json
        REGISTRY: "${{ inputs.registry }}"
      run: |
        server=${REGISTRY//https:/docker:}
        if [[ "$server" != docker://* ]] ; then
            server="docker://$server"
        fi
        for tag in ${{ inputs.tags }}; do
            name="${server}/${{ inputs.path }}:${tag}"
            printf "pushing image to %s" "$name"
            skopeo copy --dest-compress --dest-compress-format zstd --dest-compress-level 15  -q -a --dest-precompute-digests ${{ inputs.image }} "$name"
        done