`dockerprep` depends on `realpath`, which isn't present on some systems (Macs)

[ElectricWarr]

What alternatives are there?

[ElectricWarr]

realpath can be installed with brew:

brew install coreutils

This might also require brew link coreutils to create /usr/local/bin/realpath.

[ElectricWarr]

We should probably check for the existence (and correct functioning) of realpath before attempting to copy files from a potentially-non-existent templates folder.