Add comment around default network of docker on getIpAddr of docker.go

[0405ysj]

No description provided.

[0405ysj]

@3405691582 Gentle ping, would this be good to merge or I need more modifications?

[3405691582]

Sorry, I forgot to submit the comment.

[3405691582]

The internal commentary is unnecessary. I think this should be enough:

Suggested change

	// A DockerIMConfig contains configuration needs for Docker instance manager.
	type DockerIMConfig struct {
	DockerImageName string
	// DockerImageName is the name and tag of docker image to use. For example,
	// `cuttlefish-orchestration:latest`.
	// We don't intend to support any customized docker images except
	// `cuttlefish-orchestration`, which contains Host Orchestrator in it.
	DockerImageName string
	// HostOrchestratorPort is the port number of Host Orchestrator running on
	// the docker instance.
	HostOrchestratorPort int
	}
	// A DockerIMConfig contains configuration needs for Docker instance manager.
	//
	// While the container image name is configurable, we do not intend or want
	// to support other containers or alternative command execution in
	// the `cuttlefish-orchestration` container.
	type DockerIMConfig struct {
	DockerImageName string
	HostOrchestratorPort int
	}