In `#!/bin/sh` the echo command does not accept any options. It will just print "-e" on the screen. [0]
With bash there would be no problem and is probably also installed by all contributors.
sbt is weird. sbt doesn't use the commonly used version option, but an sbt command.
Maybe checking that sbt is installed with `which sbt` would even be sufficient, as sbt downloads the appropriate version for the project anyway.
[0] https://www.unix.com/man-page/posix/1posix/echo/
Saskia Gennrich