name: BuildKit Build and Deploys
description: "Build and deploy images"

inputs:
  registry_addr: 
    description: registry address
    required: true
  registry_username:
    description: "registry username"
    required: true
  registry_password:
    description: "registry password"
    required: true
  buildkit_addr:
    description: "buildkit address"
    required: true
  tags:
    description: "image tags / buildctl image name"
    required: true
  context:
    description: "buildctl build context"
    required: false
    default: "."
  dockerfile:
    description: "buildctl build dockerfile/folder"
    required: true
    default: "."       
runs:
  using: "composite"
  steps:
    - name: run buildctl built and push
      shell: bash
      run: |

        # create docker config temp folder
        DOCKER_CONFIG_DIR="${RUNNER_TEMP}/.buildctl_docker"
        mkdir -p "$DOCKER_CONFIG_DIR"

        # clean up
        trap 'rm -rf "$DOCKER_CONFIG_DIR"' EXIT


        # setup file docker config (auth) temp file
        AUTH=$(printf "%s" "${{ inputs.registry_username }}:${{ inputs.registry_password }}" | base64 -w 0)
        cat > "$DOCKER_CONFIG_DIR/config.json" <<EOF
        {
          "auths": {
            "${{ inputs.registry_addr }}": {
              "auth": "$AUTH"
            }
          }
        }
        EOF

        # Run BuildKit build, set DOCKER_CONFIG to DOCKER_CONFIG_DIR so auth works on push 
        DOCKER_CONFIG=$DOCKER_CONFIG_DIR buildctl \
          --addr ${{ inputs.buildkit_addr }} \
          build \
          --frontend=dockerfile.v0 \
          --local context=${{ inputs.context }} \
          --local dockerfile=${{ inputs.dockerfile }} \
          --opt filename=Dockerfile \
          --output type=image,name=${{ inputs.tags }},push=true