Please add a pop up for custom command

[MayDomine]

Describe the solution you'd like
When I configure a custom command , provide a key:value for prompting some message.
In a lot of case such as rename container/images save images/container and so on.

[blwsh]

Just use custom commands in the config?

customCommands:
  containers:
    - name: bash
      attach: true
      command: 'docker exec -it {{ .Container.ID }} bash'
      serviceNames: []

https://github.com/blwsh/lazydocker/blob/df6c8c196e218bdff48e72824dfd0da43335f05d/docs/Config.md#L118-L129

A popup seems redudent. If you want to use a different shell once you're in the container - just execute the shell.