CRLF gotcha for Windows users
Windows users are likely to encouter the following problem:
$ cookiecutter https://gitlab.developers.cam.ac.uk/uis/devops/webapp-boilerplate.git
...
$ ./compose.sh development
...
/usr/bin/env: ‘bash\r’: No such file or directory
...
$
The problem is caused by cookiecutter which mangles the line endings of the source file to CRLF on Windows systems by default as of version 1.7.
I worked around the problem by manually applying the changes to cookiecutter/generate.py in cookiecutter PR#1159
This is probably a readme issue until there is a cookiecutter release that fixes it.