Add daemon config to allow the user to specify the MTU of the control plane network. The first user of this new parameter is actually libnetwork that can seed the gossip with the proper MTU value allowing to pack multiple messages per UDP packet sent. If the value is not specified or is lower than 1500 the logic will set it to the default. Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com> Upstream-commit: f9f25ca5e44c89d7c1ebdfa9865076eb2cde9bb2 Component: engine
docker.go contains Docker daemon's main function.
This file provides first line CLI argument parsing and environment variable setting.