docker-image.yaml

name: Build and publish Docker image
on:
  push:
    branches:
      - '*'
    tags:
      - 'v[0-9]+.[0-9]+.[0-9]+'
  pull_request:
    branches:
      - '*'
jobs:
  trivy-scan:
    name: scan image with trivy
    runs-on: ubuntu-latest
    env:
      IMG_NAME: "kcandidate/hello"
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: build local container
        uses: docker/build-push-action@v2
        with:
          tags: ${{ IMG_NAME }}:${{ github.sha }}
          push: false
          load: true

      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: ${{ env.IMG_NAME }}:${{ github.sha }}
          format: 'sarif'
          output: 'trivy-results.sarif'
          exit-code: 1
          ignore-unfixed: true
          vuln-type: 'os,library'  
          severity: 'CRITICAL,HIGH'

      - name: Upload Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v2
        if: always()
        with:
          sarif_file: 'trivy-results.sarif'

  build:
    name: Build and push docker image
    needs: trivy-scan
    runs-on: ubuntu-latest
    env:
      IMG_NAME: "kcandidate/hello"
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Debug
        run: |
          echo "github.ref -> {{ github.ref }}"
 
      - name: Docker metadata
        id: metadata
        uses: docker/metadata-action@v3
        with:
          images: ${{ env.IMG_NAME }}
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}.{{minor}}.{{patch}}
            type=raw,value={{sha}},enable=${{ github.ref_type != 'tag' }}

      - name: Log in to Docker Hub
        uses: docker/login-action@v1
        if: ${{ github.ref_type == 'tag' }}
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v2
        with:
          context: .
          push: true
          tags: ${{ steps.metadata.outputs.tags }}
          labels: ${{ steps.metadata.outputs.labels }}