trivy-security-scan.yml

##
# This action runs Trivy container and repository vulnerability
# scanner for Docker images and filesystem.
##

name: trivy-security-scan

on:
  repository_dispatch:
    types: [trivy-scan-dispatch]

jobs:
  trivy_scan:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      security-events: write

    steps:
      - name: Checkout code
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1

      # Image availability check with retry logic
      - name: Check Docker image availability with retry
        id: check-image
        if: github.event.client_payload.image != ''
        run: |
          image="${{ github.event.client_payload.image }}"
          interval=300
          retry_limit=5
          attempt=0

          while ! docker pull $image; do
            attempt=$((attempt + 1))
            if [ "$attempt" -gt "$retry_limit" ]; then
              echo "::error::Image $image is not available after $retry_limit attempts."
              exit 1
            fi

            echo "Waiting for $image to be available. Attempt $attempt/$retry_limit. Retrying in $interval seconds..."
            sleep $interval
          done

          echo "Image $image is now available."

      # Image scanning
      - name: Run Trivy vulnerability scanner on image
        if: github.event.client_payload.image != ''
        uses: aquasecurity/trivy-action@915b19bbe73b92a6cf82a1bc12b087c9a19a5fe2 # v0.28.0
        with:
          version: 'latest'
          image-ref: ${{ github.event.client_payload.image }}
          cache: 'true'
          format: "sarif"
          output: "trivy-image-results.sarif"
          exit-code: "1"
          ignore-unfixed: true
          vuln-type: "os,library"
          severity: "CRITICAL,HIGH"
        env:
          TRIVY_CACHE_DIR: .cache/trivy

      # Upload image scan results
      - name: Upload Trivy image scan results
        uses: github/codeql-action/upload-sarif@1b1aada464948af03b950897e5eb522f92603cc2 # v3.24.9
        with:
          sarif_file: "trivy-image-results.sarif"
          category: trivy-image

      # Filesystem scanning
      - name: Run Trivy filesystem scan
        uses: aquasecurity/trivy-action@915b19bbe73b92a6cf82a1bc12b087c9a19a5fe2 # v0.28.0
        with:
          version: 'latest'
          scan-type: 'fs'
          cache: 'true'
          format: 'sarif'
          output: 'trivy-fs-results.sarif'
          severity: 'CRITICAL,HIGH'
          ignore-unfixed: true
        env:
          TRIVY_CACHE_DIR: .cache/trivy

      # Upload filesystem scan results
      - name: Upload Trivy filesystem scan results
        uses: github/codeql-action/upload-sarif@1b1aada464948af03b950897e5eb522f92603cc2 # v3.24.9
        with:
          sarif_file: 'trivy-fs-results.sarif'
          category: trivy-fs