name: Container Images CI

on:
    pull_request:

concurrency:
    group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
    cancel-in-progress: true

jobs:
    posthog_build:
        name: Build Docker image
        runs-on: ubuntu-latest
        permissions:
            id-token: write # allow issuing OIDC tokens for this workflow run
            contents: read # allow at least reading the repo contents, add other permissions if necessary

        steps:
            # If this run wasn't initiated by PostHog Bot (meaning: snapshot update),
            # cancel previous runs of snapshot update-inducing workflows

            - uses: n1hility/cancel-previous-runs@v3
              if: github.actor != 'posthog-bot'
              with:
                  token: ${{ secrets.GITHUB_TOKEN }}
                  workflow: .github/workflows/storybook-chromatic.yml

            - uses: n1hility/cancel-previous-runs@v3
              if: github.actor != 'posthog-bot'
              with:
                  token: ${{ secrets.GITHUB_TOKEN }}
                  workflow: .github/workflows/ci-backend.yml

            - name: Check out
              uses: actions/checkout@v3

            - name: Build and cache Docker image in Depot
              uses: ./.github/actions/build-n-cache-image
              with:
                  actions-id-token-request-url: ${{ env.ACTIONS_ID_TOKEN_REQUEST_URL }}

    deploy_preview:
        name: Deploy preview environment
        uses: ./.github/workflows/pr-deploy.yml
        needs: [posthog_build]
        secrets: inherit
        if: ${{ contains(github.event.pull_request.labels.*.name, 'deploy') }}

    lint:
        name: Lint changed Dockerfiles
        runs-on: ubuntu-latest
        steps:
            - name: Check out
              uses: actions/checkout@v3
              with:
                  fetch-depth: 0

            - name: Check if any Dockerfile has changed
              id: changed-files
              uses: tj-actions/changed-files@v42
              with:
                  files: |
                      **/Dockerfile
                      **/*.Dockerfile
                      **/Dockerfile.*
                  separator: ' '

            - name: Lint changed Dockerfile(s) with Hadolint
              uses: jbergstroem/hadolint-gh-action@v1
              if: steps.changed-files.outputs.any_changed == 'true'
              with:
                  dockerfile: '${{ steps.changed-files.outputs.all_modified_files }}'