refactor: inline database environment variable exports

.github/workflows/ci.yml

@@ -6,12 +6,6 @@ on:
   pull_request:
     branches: [ main ]
 
-env:
-  # WHY?: services are executed way before the env can be sourced from .env file
-  DB_NAME: piku_test_db
-  DB_USER: test
-  DB_PASSWORD: password123
-
 jobs:
   setup-environment:
     name: Generate Certificates
@@ -40,10 +34,9 @@ jobs:
       postgres:
         image: postgres:16-alpine
         env:
-          POSTGRES_DB: ${{ env.DB_NAME }}
-          POSTGRES_USER: ${{ env.DB_USER }}
-          POSTGRES_PASSWORD: ${{ env.DB_PASSWORD }}
-          PGDATA: /var/lib/postgresql/data/pgdata
+          POSTGRES_DB: piku_test_db
+          POSTGRES_USER: test
+          POSTGRES_PASSWORD: password123
         ports:
           - 5442:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
@@ -69,6 +62,10 @@ jobs:
           cp ../.env.example ../.env
           uv sync
 
+          export DB_NAME="piku_test_db"
+          export DB_USER="test"
+          export DB_PASSWORD="password123"
+
           if [ "$GITEA_ACTIONS" = "true" ]; then
             export DB_HOST="postgres"
             export DB_PORT="5432"