Migrate job fails with new 6.0.1 custom app

[tarioch]

Description of the issue

I created a custom app according to https://github.com/frappe/frappe_docker/blob/main/docs/custom-apps.md

The apps are

[
    {
      "url": "https://github.com/frappe/erpnext",
      "branch": "version-14"
    },
    {
      "url": "https://github.com/tarioch/tariocherp.git",
      "branch": "master"
    }
]

you can see the build here: https://github.com/tarioch/docker-erpnext

When having the migrate enabled, the migrate job fails with

Usage: bench [OPTIONS] COMMAND [ARGS]...
Try 'bench --help' for help.

Error: no such option: --site
Usage: bench [OPTIONS] COMMAND [ARGS]...
Try 'bench --help' for help.

Error: no such option: --site
Usage: bench [OPTIONS] COMMAND [ARGS]...
Try 'bench --help' for help.

Error: no such option: --site

[tarioch]

Running bench migrate without --site option works fine, so I guess that argument needs to be dropped

[revant]

Moving discussion to PR.