- `/opt/cloudfleet/`
  - `data/`
    - `apps/<appname>/`
      user specific app data (Mailpile index, ...)
      App data 
      - `<username>/`
    - `shared/<category>/`
      Shared data (mails, tls certificates, gpg keys, ...)
      - `<username>/`
        user specific shared data
  - `conf/`
    common configuration (no blimp specific stuff)

Create draft for directory structure
Create draft for directory structure