Merge pull request #1872 from ijc/reduce-connection-timeout

add a 10s timeout to the client object.

cli/context/docker/load.go

@@ -122,6 +122,7 @@ func (c *Endpoint) ClientOpts() ([]client.Opt, error) {
 				client.WithDialContext(helper.Dialer),
 			)
 		}
+		result = append(result, client.WithTimeout(10*time.Second))
 	}
 
 	version := os.Getenv("DOCKER_API_VERSION")