Thanks for the report. I’ve fixed this in master and hopefully this should make it in to a release soon - watch the changelog for (#3514)! In the meantime, you can override the no_proxy variable by adding it yourself in docker run -e no_proxy=""
The value you are seeing is picked up from OSX as it seems to be added automatically to some connections. We had a bug in Beta 13 that caused this value to get passed through to Docker for Mac even if you hadn’t specified a HTTP Proxy. This was fixed in Beta 13.1. If you are running Beta 13.1, a reset to factory defaults may remove the bad state for the no_proxy variable.