fix(ci): add postgresql to CI workflow

Author: rohlacanna

.github/workflows/ci.yaml

@@ -138,6 +138,29 @@ jobs:
 
     env:
       MIX_ENV: test
+      # PostgreSQL configuration in environment variables
+      PGHOST: localhost
+      PGUSER: postgres
+      PGPASSWORD: postgres
+      PGDATABASE: pagination_ex_test
+      PGPORT: 5432
+
+    # PostgreSQL service that will run alongside the tests
+    services:
+      postgres:
+        image: postgres:14
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: pagination_ex_test
+        ports:
+          - 5432:5432
+        # Options to ensure PostgreSQL is ready
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
 
     strategy:
       matrix:
@@ -182,5 +205,11 @@ jobs:
       - name: Clean build
         run: mix clean
 
+      # Create tables for testing if necessary
+      - name: Setup database
+        run: |
+          mix ecto.create 
+          mix ecto.migrate
+
       - name: Run tests
         run: mix test