Description of problem

Dokku displays the message bash: line 1: main: command not found when the disk is full, instead of providing a more helpful error message.

Steps to reproduce

1. Gradually fill the disk space by regularly using Dokku, deploying apps, and pushing code, without manually scheduling a daily Docker prune to prevent the disk from filling up. Alternatively, use the 'dd' command to rapidly fill up the disk.

2. After the disk is full, execute any Dokku command.

$ dokku ps:restart mywebapp
 !     /home/dokku/.basher/bash: line 1: main: command not found
2023/03/20 08:13:22 exit status 127

$ dokku ps:stop mywebapp
 !     /home/dokku/.basher/bash: line 1: main: command not found
2023/03/20 08:13:28 exit status 127

$ dokku app:destroy mywebapp
 !     /home/dokku/.basher/bash: line 1: main: command not found
2023/03/20 08:14:16 exit status 127

dokku report $APP_NAME

N/A

Additional information

No response

Output of failing commands after running: dokku trace:off

No response

Output of failing commands after running: dokku trace:on

No response