Incompatible with dash shell

[Gby56]

Hello !

I have raised this via a support request too, but I want to raise it here just in case:
The ci.sh script that is downloaded via curl and piped into sh will cause errors if sh is pointing to a strict POSIX-compliant shell like dash.

We've seen it throw errors like
Error: stderr: sh: 81: [[: not found
Which shows that it doesn't support bash -style if blocks

A solution would be to add an input for the action, to specify which shell is piped the ci.sh script... But I'm not sure if that would work either, because:

• Downloads the sh script
• pipe to bash
• bash interprets the shebang that points to #!/usr/bin/env sh
• the env will return dash instead of bash in the end...
• error remains...