deploy.yml

name: Deploy

on:
  push:
    branches: [master]
    paths:
      - 'packages/backend/**'
      - 'package.json'
      - 'package-lock.json'
      - 'tsconfig.base.json'

# GITHUB_TOKEN needs write access to push the image to GHCR.
permissions:
  contents: read
  packages: write

jobs:
  deploy:
    name: Build, Push & Deploy
    runs-on: ubuntu-latest
    # Scoping to a GitHub environment lets you add approval gates and
    # view deployment history in the GitHub UI (Settings > Environments).
    environment: production

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '24.14.1'

      - name: Generate release metadata
        run: |
          PREVIOUS_RELEASE_SHA="${{ github.event.before }}" \
            node packages/backend/scripts/write-release-metadata.js packages/backend/release-metadata.json

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          file: packages/backend/Dockerfile
          push: true
          # Always push :latest so the Linode deploy script can reference a stable tag.
          # The SHA tag gives you an immutable rollback point.
          tags: |
            ghcr.io/${{ github.repository_owner }}/muzzle:latest
            ghcr.io/${{ github.repository_owner }}/muzzle:${{ github.sha }}

      - name: Deploy to Linode
        uses: appleboy/ssh-action@v1
        # The env block sets these variables on the runner, and `envs` passes
        # them through to the remote shell — keeping the token off the command
        # line and out of the remote process list.
        env:
          GHCR_TOKEN: ${{ secrets.GHCR_PAT }}
          GHCR_USER: ${{ github.actor }}
          IMAGE: ghcr.io/${{ github.repository_owner }}/muzzle:latest
        with:
          host: ${{ secrets.LINODE_HOST }}
          username: ${{ secrets.LINODE_USER }}
          password: ${{ secrets.LINODE_PASSWORD }}
          envs: GHCR_TOKEN,GHCR_USER,IMAGE
          script: |
            # Authenticate and pull the freshly built image.
            echo "$GHCR_TOKEN" | docker login ghcr.io -u "$GHCR_USER" --password-stdin
            docker pull "$IMAGE"

            # Tear down the named container (if any)
            docker stop muzzle 2>/dev/null || true
            docker rm -f muzzle 2>/dev/null || true

            # Hand off to your existing startup script which handles volume
            # mounts and env var injection.
            # Update this path to wherever the script lives on your Linode.
            bash -lc '/home/muzzle.lol/start-muzzle.sh'

            # Validate that the service stayed up; if not, print diagnostics.
            sleep 3
            if ! docker ps --format '{{.Names}}' | grep -qx 'muzzle'; then
              echo "Container 'muzzle' is not running after startup"
              docker ps -a --filter name=^/muzzle$
              docker logs --tail 200 muzzle 2>/dev/null || true
              exit 1
            fi