feat: Adds env file to services.

compose.yaml

@@ -7,8 +7,6 @@ services:
     volumes:
       - db-data:/var/lib/postgresql/data
     env_file: .env
-    environment:
-      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U postgres"]
       start_period: 1m