Deploy a plain HTTP registry

當docker pull a.b.com/ubuntu:14.04的時候，若是提示：「Docker x509 insecure registry」之類的，說這個registry不安全的，若是就是想在a.b.com上面pull，能夠這樣：

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mac版直接這樣：

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linux版的docker，須要這樣：

1. Edit the daemon.json file, whose default location is /etc/docker/daemon.json on Linux , If the daemon.json file does not exist, create it. Assuming there are no other settings in the file, it should have the following contents:

{ "insecure-registries" : ["myregistrydomain.com:5000"] }

2. Restart Docker for the changes to take effect:
   sudo service docker restart