## Description
Add option for a template ready check. You can specify `ready_cmd` which
will be run until it exits with code 0. Max timeout is 5 minutes. After
exit code 0, the template will be marked as ready.
If no ready command is defined, `sleep 20` is assumed when the start
command is present, and `sleep 0` when none is defined. It is also
possible to define ready command without any start command. This might
be helpful if the filesystem contains self-booted services (e.g. using
systemd).
```
ready_cmd = "echo 'Starting ready check'; sleep 40; echo 'Template is ready'"
```
This adds possibility to configure the default 20 seconds wait time for
a start command.
New documentation can be found at `/docs/sandbox-template/ready-cmd`.
## Checklist
- [x] Make sure the https://github.com/e2b-dev/infra/pull/719 is
deployed
---------
Co-authored-by: Vasek Mlejnsky <vasek@e2b.dev>
Co-authored-by: Jakub Novák <jakub@e2b.dev>
Jakub Dobry
e244ba72c0