feat: use entrypoint to create user account and copy ssh key

docker-compose.yml

@@ -19,6 +19,9 @@ services:
       dockerfile: ./quests/Dockerfile
     extra_hosts:
       - 'host.docker.internal:host-gateway'
+    volumes:
+      - ./config/ssh_key.pub:/ssh_key.pub:ro
+      - ./quests/entrypoint.sh:/entrypoint.sh:ro
 
 networks:
   internal: