Build-Args Flag

[vashian]

#81

[vashian]

@mhemrg Define build arguments with the --build-arg syntax:

docker build . -t my-node-app --build-arg NODE_VERSION=8 --build-arg APP_DIR=/usr/src/app

[mhemrg]

Please use for of instead of map. You should only use map when you're returning something.

[vanenshi]

Thanks guys