cicd.yml

name: Publish to Dockerhub and GitHub packages

on: push # [push, pull_request]

jobs:
  benchmark:
    runs-on: ubuntu-20.04
    steps:
    - uses: actions/checkout@v1
    - name: benchmarks the go code
      run: make benchmark

  test:
    runs-on: ubuntu-20.04
    steps:
    - uses: actions/checkout@v1
    - name: tests the code
      run: make test

# https://docs.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#example-printing-context-information-to-the-log-file @ 2020 07 19      
  context_information:
    needs: [benchmark, test]
    runs-on: ubuntu-20.04
    steps:
    - name: Dump GitHub context
      env:
        GITHUB_CONTEXT: ${{ toJson(github) }}
      run: echo "$GITHUB_CONTEXT"
    - name: Dump job context
      env:
        JOB_CONTEXT: ${{ toJson(job) }}
      run: echo "$JOB_CONTEXT"
    - name: Dump steps context
      env:
        STEPS_CONTEXT: ${{ toJson(steps) }}
      run: echo "$STEPS_CONTEXT"
    - name: Dump runner context
      env:
        RUNNER_CONTEXT: ${{ toJson(runner) }}
      run: echo "$RUNNER_CONTEXT"
    - name: Dump strategy context
      env:
        STRATEGY_CONTEXT: ${{ toJson(strategy) }}
      run: echo "$STRATEGY_CONTEXT"
    - name: Dump matrix context
      env:
        MATRIX_CONTEXT: ${{ toJson(matrix) }}
      run: echo "$MATRIX_CONTEXT"

# https://docs.github.com/en/actions/configuring-and-managing-workflows/using-environment-variables#default-environment-variables @ 2020 07 19
  context_env:
    needs: [benchmark, test]
    runs-on: ubuntu-20.04
    steps:
      - name: Dump GitHub HOME	
        env:
          GHHOME: ${HOME}
        run: echo "$GHHOME"
      - name: Dump GITHUB_WORKFLOW
        env:
          GITHUB_WORKFLOW: ${GITHUB_WORKFLOW}
        run: echo "$GITHUB_WORKFLOW"
      - name: Dump GITHUB_RUN_ID
        env:
          GITHUB_RUN_ID: ${GITHUB_RUN_ID}
        run: echo "$GITHUB_RUN_ID"
      - name: Dump GITHUB_RUN_NUMBER
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_RUN_NUMBER}
        run: echo "$GITHUB_RUN_NUMBER"
      - name: Dump GITHUB_ACTION
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_ACTION}
        run: echo "$GITHUB_ACTION"
      - name: Dump GITHUB_ACTIONS
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_ACTIONS}
        run: echo "$GITHUB_ACTIONS"
      - name: Dump GITHUB_ACTOR
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_ACTOR}
        run: echo "$GITHUB_ACTOR"
      - name: Dump GITHUB_REPOSITORY	
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_REPOSITORY}
        run: echo "$GITHUB_REPOSITORY"
      - name: Dump GITHUB_REPOSITORY	
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_REPOSITORY}
        run: echo "$GITHUB_REPOSITORY"
      - name: Dump GITHUB_EVENT_PATH	
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_EVENT_PATH}
        run: echo "$GITHUB_EVENT_PATH"
      - name: Dump GITHUB_WORKSPACE	
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_WORKSPACE}
        run: echo "$GITHUB_WORKSPACE"
      - name: Dump GITHUB_SHA	
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_SHA}
        run: echo "$GITHUB_SHA"
      - name: Dump GITHUB_REF	
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_REF}
        run: echo "$GITHUB_REF"
      - name: Dump GITHUB_HEAD_REF	
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_HEAD_REF}
        run: echo "$GITHUB_HEAD_REF"
      - name: Dump GITHUB_BASE_REF	
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_BASE_REF}
        run: echo "$GITHUB_BASE_REF"
      - name: Dump GITHUB_SERVER_URL	
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_SERVER_URL}
        run: echo "$GITHUB_SERVER_URL"
      - name: Dump GITHUB_API_URL	
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_API_URL}
        run: echo "$GITHUB_API_URL"
      - name: Dump GITHUB_GRAPHQL_URL	
        env:
          GITHUB_RUN_NUMBER: ${GITHUB_GRAPHQL_URL}
        run: echo "$GITHUB_GRAPHQL_URL"

  push2dockerhub_if_linux:
    needs: [benchmark, test]
    strategy:
      fail-fast: false
      matrix:
        os: [macOS-10.15, ubuntu-20.04]
        goos: [linux, darwin]
        exclude:
          - os: macOS-10.15
            goos: linux
          - os: ubuntu-20.04
            goos: darwin
    runs-on: ${{ matrix.os }}
    steps:
    - uses: actions/checkout@v2
    - name: builds the binary
      run: CGO_ENABLED=0 GOOS=${{ matrix.goos }} go build -a -installsuffix cgo -ldflags '-w -extldflags "-static"' -o hello_world${{ matrix.os }}${{ matrix.goos }} .
  
    - uses: actions/checkout@master
    - name: if linux build docker image and docker hub login as well as push
      if: matrix.os == 'ubuntu-20.04'
      env:
        DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
        DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
      run: |
        # inspired by https://gist.github.com/jonico/e18127b487d198606e31aac669262af8 @ 2019 08 19
        d=$(date +%Y-%m-%d)
        tag=$d-${{ matrix.os }}-${{ github.sha }}
        docker build -t lotharschulz/hello-github-actions:$tag .
        echo ${DOCKER_PASSWORD} | docker login -u ${DOCKER_USERNAME} --password-stdin
        docker push lotharschulz/hello-github-actions:$tag

  push_to_docker_pkg:
    needs: [benchmark, test]
    name: build-push-action via docker cli
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2
      - name: Build and Push
        env:
          DOCKER_USERNAME: ${{ github.actor }}
          DOCKER_PASSWORD: ${{ secrets.GITHUB_TOKEN }}
        run: |
          echo ${DOCKER_PASSWORD} | docker login https://docker.pkg.github.com -u ${DOCKER_USERNAME} --password-stdin
          d=$(date +%Y-%m-%d--%H-%M-%S--%N)
          tag=$d-${{ github.sha }}
          IMAGE_AND_TAG=docker.pkg.github.com/lotharschulz/hello-github-actions/hello-github-actions-pkg:$tag
          docker build -t $IMAGE_AND_TAG .
          docker push $IMAGE_AND_TAG

  ghcr_push:
    needs: [benchmark, test]
    name: ghcr push
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2
      - name: Build and Push
        env:
          GCR_USERNAME: ${{ github.actor }}
          GCR_PASSWORD: ${{ secrets.CR_PAT }}
        run: |
          echo "${GCR_PASSWORD}" | docker login https://ghcr.io -u ${GCR_USERNAME} --password-stdin
          d=$(date +%Y-%m-%d--%H-%M-%S--%N)
          tag=$d-${{ github.sha }}
          IMAGE_AND_TAG=ghcr.io/lotharschulz/hello-github-actions/hello-github-actions-ghcr:$tag
          docker build -t $IMAGE_AND_TAG .
          docker push $IMAGE_AND_TAG