sudo not packed with ghost:latest

**ghost setup returns**
```
✖ Setting up "ghost" system user
An error occurred.
Message: 'Command failed: /bin/sh -c sudo -S -p '#node-sudo-passwd#'  chown -R ghost:ghost /var/lib/ghost/content
/bin/sh: 1: sudo: not found
```

**sudo command returns not found**

Tried with both latest and alpine