github: Add a docker-compose test.

Author: alexmv

.github/workflows/dockerfile.yaml

@@ -141,3 +141,62 @@ jobs:
           pod=$(kubectl get pods -n "$namespace" -l app.kubernetes.io/name=zulip --output name)
           kubectl -n "$namespace" logs "$pod"
           kubectl -n "$namespace" exec "$pod" -c zulip -- cat /var/log/zulip/errors.log
+
+  docker-compose-test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    needs:
+      - build
+    env:
+      GITHUB_CI_IMAGE: ghcr.io/${{ github.repository }}:pr-${{ github.event.pull_request.number }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v5
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Verify Docker Compose config validation
+        run: |
+          docker compose \
+            -f compose.yaml \
+            -f ci/compose.override.yaml \
+            --env-file ci/env \
+            config
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Start Docker Compose services
+        run: |
+          docker compose \
+            -f compose.yaml \
+            -f ci/compose.override.yaml \
+            -e GITHUB_CI_IMAGE=ghcr.io/${{ github.repository }}:pr-${{ github.event.pull_request.number }} \
+            --env-file ci/env \
+            up -d --no-build
+
+      - name: Wait for services to be healthy
+        run: |
+          echo "Waiting for zulip service to be healthy..."
+          timeout 300 bash -c \
+             'until docker inspect --format "{{.State.Health.Status}}" $(docker compose ps -q zulip) | grep -q healthy; do sleep 5; done'
+
+      - name: Verify all services are running
+        run: |
+          docker compose ps
+          # Check that no services are in a failed state
+          if docker compose ps | grep -E "(Exit|Restarting)"; then
+            exit 1
+          fi
+
+      - name: Check service logs for critical errors
+        if: success() || failure()
+        continue-on-error: true
+        run: |
+          docker compose ps
+          docker compose logs zulip

ci/compose.override.yaml

@@ -0,0 +1,21 @@
+---
+secrets:
+  zulip__postgres_password:
+    environment: "ZULIP__POSTGRES_PASSWORD"
+  zulip__memcached_password:
+    environment: "ZULIP__MEMCACHED_PASSWORD"
+  zulip__rabbitmq_password:
+    environment: "ZULIP__RABBITMQ_PASSWORD"
+  zulip__redis_password:
+    environment: "ZULIP__REDIS_PASSWORD"
+  zulip__secret_key:
+    environment: "ZULIP__SECRET_KEY"
+  zulip__email_password:
+    environment: "ZULIP__EMAIL_PASSWORD"
+
+services:
+  zulip:
+    image: "${GITHUB_CI_IMAGE:?error}"
+    environment:
+      SETTING_EXTERNAL_HOST: "zulip.example.net"
+      SETTING_ZULIP_ADMINISTRATOR: "admin@example.net"

ci/env

@@ -0,0 +1,6 @@
+ZULIP__POSTGRES_PASSWORD=postgres_password
+ZULIP__MEMCACHED_PASSWORD=memcached_password
+ZULIP__RABBITMQ_PASSWORD=rabbitmq_password
+ZULIP__REDIS_PASSWORD=redis_password
+ZULIP__SECRET_KEY=django_secret_key
+ZULIP__EMAIL_PASSWORD=outgoing_email_password