docker.go contains Docker's main function.

This file provides first line CLI argument parsing and environment variable setting.

docker.go contains Docker daemon's main function.

This file provides first line CLI argument parsing and environment variable setting.

Fix readme doc for dockerd
Fix readme doc for dockerd

Signed-off-by: yuexiao-wang <cb85382fcdcd61052c05cab964e91e5c6acdef6c@zte.com.cn>
