Make Dev enters into the webserver shell.

Fixed database env variables to properly connect.

compose.yaml

@@ -10,16 +10,18 @@ services:
       PYTHONDONTWRITEBYTECODE: 1
       PYTHONUNBUFFERED: 1
       DJANGO_SETTINGS_MODULE: ${DJANGO_SETTINGS_MODULE}
+    env_file: ".env"
     restart: unless-stopped
 
   db:
     image: postgres:18
     environment:
-      POSTGRES_DB: ${POSTGRES_DB}
+      POSTGRES_DB: ${POSTGRES_DBNAME}
       POSTGRES_USER: ${POSTGRES_USER}
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
     volumes:
       - postgres_data:/var/lib/postgresql
+    env_file: ".env"
     restart: unless-stopped
 
   adminer: