Pass all arguments to rails new

This allows passing of options like:

    bin/rails-new --main -d postgresql helloworld

Author: excid3

bin/rails-new

@@ -17,4 +17,4 @@ docker build \
   -t rails-new-$RUBY_VERSION-$RAILS_VERSION .
 
 # Run the image
-docker run -v $(pwd):/$(pwd) -w $(pwd) rails-new-$RUBY_VERSION-$RAILS_VERSION rails new $1
+docker run -v $(pwd):/$(pwd) -w $(pwd) rails-new-$RUBY_VERSION-$RAILS_VERSION rails new $@