Script does not respect a "no_proxy" env in a proxied environment

[grimkroton]

If running this script behind a proxy, the image pull is running, but the image push to a local registry, which is reachable without a proxy, fails.

The push also uses the proxy, but the local registry is reachable without a proxy.

If a "no_proxy" env is set, the push should not use a proxy.

[grimkroton]

It seems, that this is a bug in the python requests module:
psf/requests#879

[garethahealy]

@grimkroton ; which script are you talking about?

[grimkroton]

@garethahealy this script https://raw.githubusercontent.com/redhat-cop/openshift-toolkit/master/disconnected_registry/docker-registry-sync.py
Sorry for format, answered from mobile.