devcontainer-caching-pipeline.yml

variables:
  - group: azdo-terraform

jobs:
  - job: DevcontainerPipelineWithCaching
    pool:
      vmImage: 'ubuntu-latest'
    steps:
      # Cache the docker image file
      - task: Cache@2
        inputs:
          key: docker-image | .devcontainer/**
          path: '.dockercache'
          restoreKeys: docker-image
          cacheHitVar: DOCKER_CACHE_HIT
        displayName: Cache docker layers

      - task: PowerShell@2
        displayName: Load cached devcontainer image
        condition: eq(variables.DOCKER_CACHE_HIT, 'true')
        inputs:
          targetType: 'inline'
          script: docker load -i ./.dockercache/devcontainer.tar

      - task: PowerShell@2
        displayName: 'Build devcontainer'
        inputs:
          targetType: 'inline'
          script: |
            # Create dockercache directory
            mkdir -p ./.dockercache/
            docker build --cache-from devcontainer:latest -f .devcontainer/Dockerfile -t devcontainer .

      - task: PowerShell@2
        displayName: Save devcontainer image
        condition: and(succeeded(), ne(variables.DOCKER_CACHE_HIT, 'true'))
        inputs:
          targetType: 'inline'
          script: docker image save -o ./.dockercache/devcontainer.tar devcontainer

      - task: PowerShell@2
        displayName: Validate terraform
        inputs:
          targetType: 'inline'
          script: |
            docker run `
              --entrypoint /opt/microsoft/powershell/7/pwsh `
              -v $(System.DefaultWorkingDirectory):/src `
              --workdir /src `
              devcontainer `
              -c "terraform init && terraform validate && tflint"

      - task: PowerShell@2
        displayName: Run tests
        env:
          AZDO_PERSONAL_ACCESS_TOKEN: $(AZDO_PERSONAL_ACCESS_TOKEN)
          AZDO_ORG_SERVICE_URL: $(AZDO_ORG_SERVICE_URL)
        inputs:
          targetType: 'inline'
          script: |
            docker run `
              -e AZURE_DEVOPS_EXT_PAT=$(AZDO_PERSONAL_ACCESS_TOKEN) `
              -e AZDO_PERSONAL_ACCESS_TOKEN=$(AZDO_PERSONAL_ACCESS_TOKEN) `
              -e AZDO_ORG_SERVICE_URL=$(AZDO_ORG_SERVICE_URL) `
              --entrypoint /opt/microsoft/powershell/7/pwsh `
              -v $(System.DefaultWorkingDirectory):/src `
              --workdir /src `
              devcontainer `
              -c Invoke-Pester -EnableExit