Can't start - easy fix to add to instructions

[BlairBDavies]

I'm new at docker but figured it out.

When trying to run this on a windows machine, i ran into "could not find startapp.sh" and could not understand why.

It's because my git install uses CRLF instead of LF in config "core.autocrlf=true"

The fix is to ensure docker-entrypoint.sh is saved in "LF" instead of "CRLF"

Might help someone else. Not sure if theres a gitattributes setting that would override the fact that my setting is this way, but idk.