Fix env var mapping

Author: fbacall

.github/workflows/test.yml

@@ -17,9 +17,9 @@ jobs:
       postgres:
         image: postgres:14
         env:
-          POSTGRES_DB: ${DB_NAME}
-          POSTGRES_USER: ${DB_USER}
-          POSTGRES_PASSWORD: ${DB_PASSWORD}
+          POSTGRES_DB: ${{ env.DB_NAME }}
+          POSTGRES_USER: ${{ env.DB_USER }}
+          POSTGRES_PASSWORD: ${{ env.DB_PASSWORD }}
         ports:
           - 5432:5432
         options: >-