docker: cleanup examples

docker-compose.prod.yml

@@ -1,5 +1,3 @@
-version: '3.8'
-
 services:
   web: &django
     build:
@@ -8,8 +6,6 @@ services:
     image: ${SERVER_NAME}
     container_name: ${SERVER_NAME}
     command: /start
-    volumes:
-      - temp:/temp
     ports:
       - "${OUTBOUND_PORT}:8000"
     env_file:
@@ -38,11 +34,3 @@ services:
     ports: [ ]
     command: /start-procrastinate
     restart: unless-stopped
-
-networks:
- default:
-   name: compose_default
-   external: true
-
-volumes:
-  temp: