Add PostgreSQL service to the GitHub Actions workflow

Author: dcalixto

.github/workflows/crystal-test.yml

@@ -11,6 +11,22 @@ jobs:
   crystal_test:
     name: Crystal Test
     runs-on: ubuntu-latest
+
+    services:
+      postgres:
+        image: postgres:latest
+        env:
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_USER: postgres
+          POSTGRES_DB: crystal_pg_test
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
     strategy:
       matrix:
         crystal-version: ["1.9", "1.10"]