GitHub Actionsでdocker contaienrをビルドしてreleaseにコンテナのファイルをアップロードする

当初やりたかったことができたので備忘録として上げておく。

これにpytestを組み込めば最低限のことはできるようになったが、書き方が未だによくかわからない…。

.github\workflows\docker-build-to-release.yml

name: Build and Deploy of Docker container to release

on:
  push:
    tags:
      - '*'

permissions:
  contents: write

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      
      - name: Set up to Buildx
        uses: docker/setup-buildx-action@v3

      - name: Prepare filename from tag name
        run: echo "TAG=${GITHUB_REF/refs\/tags\//}" >> $GITHUB_ENV
      
      - name: Prepare filename from current datetime
        run: echo "CURRENT_DATE=$(date +'%y%m%d_%H%M%S')" >> $GITHUB_ENV

      - name: Build the Docker image
        uses: docker/build-push-action@v5
        with:
          load: true
          tags: hallo-world:${{ env.TAG }}
          context: .
          # file: Dockerfile <- Specify either context or file
          # build-args: |
          #   ARG1=value1
          #   ARG2=value2

      - name: Save Docker image
        run: docker save hallo-world:${{ env.TAG }} | gzip > ${{ env.CURRENT_DATE }}.tar.gz

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: docker-image
          path: ${{ env.CURRENT_DATE }}.tar.gz

      - name: Create Release
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ env.TAG }}
          release_name: ${{ env.TAG }}  # Relese title
          draft: false
          prerelease: false

      - name: Upload Release Asset
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: ./${{ env.CURRENT_DATE }}.tar.gz 
          asset_name: test-${{ env.CURRENT_DATE }}.tar.gz  # filename
          asset_content_type: application/gzip