docker.yml

name: Docker

on:

  workflow_dispatch:
    inputs:
      image:
        description: "Docker image name and tag"
        required: true
        default: "r2s-v2proxy:latest"
      publish_tag:
        description: "ghcr.io TAG"
        required: false


permissions:
  contents: read
  packages: write

jobs:
  # Build and export the docker image
  build:
    name: Build
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - name: Build
        id: build
        run: |
          image="$(echo ${{ inputs.image }} | tr -d '[:space:]')"
          echo "image=$image" >> "$GITHUB_OUTPUT"

          echo "Building: $image"
          docker build -t "$image" .

      - name: Export image
        id: export
        run: |
          image='${{ steps.build.outputs.image }}'
          output_fn="$(echo "$image" | tr ':' '_')"
          echo "output_fn=$output_fn" >> "$GITHUB_OUTPUT"
          docker save "$image" -o '${{ runner.temp }}/image.tar'
          sha256sum '${{ runner.temp }}/image.tar' > '${{ runner.temp }}/image.tar.sha256'

      - name: Upload artifact
        continue-on-error: true
        uses: actions/upload-artifact@v4
        with:
          name: ${{ steps.export.outputs.output_fn }}
          path: |
            ${{ runner.temp }}/image.tar
            ${{ runner.temp }}/image.tar.sha256
          compression-level: 9
          retention-days: 1

      - name: Push to ghcr
        if: ${{ inputs.publish_tag != '' }}
        run: |
          image="${{ steps.build.outputs.image }}"
          echo "Pushing: $image"
          echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
          push_image="ghcr.io/${{ github.repository }}:${{ inputs.publish_tag }}"
          push_image="$(echo "$push_image" | tr '[:upper:]' '[:lower:]')"
          docker tag "$image" "$push_image"
          docker push "$push_image"
          echo "Pushed: $image to $push_image"