need more specific guide to install this penpot-admin o(>.<)o

[eksroo]

I have penpot run successfully,then i found this penpot-admin.
After"For a quick examplo on how it can be used, please refer to the penpot docker compose file for an example for how it can be used."
in<docker-compose.yaml>,by "admin" i locate:
" ## The PREPL host. Mainly used for external programatic access to penpot backend
## (example: admin). By default it listen on localhost but if you are going to use
## the admin, you will need to uncomment this and set the host to 0.0.0.0.

  # - PENPOT_PREPL_HOST=0.0.0.0

"
what should i do then ? really frustrated o(>.<)o