[gcmrtc]

Why `&& true` after that apt command?

[kvz]

Author here. It's a noop that lets me put a \ after each lines (not all lines except the last) which lets me re-order commands easily. It's a bit like enjoying trailing comma's for all elements/lines in an array. I agree it's a bit weird.

[gtirloni]

Maybe it's a typo and they meant "|| true" to always return success?

Yeah, at a quick glance I don't see what that's achieving.