Invalid `Podfile` file

When trying to use RNRepo with iOS (RN CLI)

I get the following error:

```
[!] Invalid `Podfile` file: cannot load such file -- zip.

 #  from <path>/ios/Podfile:8
 #  -------------------------------------------
 #
 >  require Pod::Executable.execute_command('node', ['-p',
 #   'require.resolve(
 #  -------------------------------------------
error: script "pods" exited with code 1
```