CI: Restore Postgres to services, use service name as hostname

Gitea runs jobs in containers, so service containers are networked by
name (same as GitHub Actions with container:). Postgres goes back into
services: and is addressed as 'postgres', not localhost. MinIO stays
as a manual docker run with --network container:$(hostname) since it
needs `server /data` and is addressed as localhost.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/pipeline.yml

@@ -114,26 +114,31 @@ jobs:
   api-integration:
     name: API Integration Tests
     runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres:16
+        env:
+          POSTGRES_USER: reactbin
+          POSTGRES_PASSWORD: reactbin
+          POSTGRES_DB: reactbin_test
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 5s
+          --health-timeout 5s
+          --health-retries 10
     steps:
       - uses: actions/checkout@v4
 
-      - name: Start services
+      - name: Start MinIO
         run: |
-          docker run -d --name ci-postgres \
-            --network container:$(hostname) \
-            -e POSTGRES_USER=reactbin \
-            -e POSTGRES_PASSWORD=reactbin \
-            -e POSTGRES_DB=reactbin_test \
-            postgres:16
           docker run -d --name ci-minio \
             --network container:$(hostname) \
             -e MINIO_ROOT_USER=minioadmin \
             -e MINIO_ROOT_PASSWORD=minioadmin \
             quay.io/minio/minio server /data
 
-      - name: Wait for services and create bucket
+      - name: Create MinIO bucket
         run: |
-          until docker exec ci-postgres pg_isready -U reactbin; do sleep 2; done
           curl -fsSL https://dl.min.io/client/mc/release/linux-amd64/mc -o /tmp/mc
           chmod +x /tmp/mc
           until /tmp/mc alias set local http://localhost:9000 minioadmin minioadmin; do sleep 2; done
@@ -159,8 +164,8 @@ jobs:
         run: uv run pytest tests/integration/ -q
         working-directory: api
         env:
-          TEST_DATABASE_URL: postgresql+asyncpg://reactbin:reactbin@localhost/reactbin_test
+          TEST_DATABASE_URL: postgresql+asyncpg://reactbin:reactbin@postgres/reactbin_test
-          DATABASE_URL: postgresql+asyncpg://reactbin:reactbin@localhost/reactbin_test
+          DATABASE_URL: postgresql+asyncpg://reactbin:reactbin@postgres/reactbin_test
           S3_ENDPOINT_URL: http://localhost:9000
           S3_BUCKET_NAME: reactbin-test
           S3_ACCESS_KEY_ID: minioadmin
@@ -171,9 +176,9 @@ jobs:
           OWNER_USERNAME: testowner
           OWNER_PASSWORD: testpass
 
-      - name: Stop services
+      - name: Stop MinIO
         if: always()
-        run: docker stop ci-postgres ci-minio || true && docker rm ci-postgres ci-minio || true
+        run: docker stop ci-minio || true && docker rm ci-minio || true
 
   # ── Image builds (tag-only, gated on all jobs) ────────────────────────────────