agent/engine/dockerstate/docker_task_engine_state.go
func (state *DockerTaskEngineState) DockerIDByV3EndpointID(v3EndpointID string) (string, bool) {
	state.lock.RLock()
	defer state.lock.RUnlock()

	dockerID, ok := state.v3EndpointIDToDockerID[v3EndpointID]
	return dockerID, ok
}
func (state *DockerTaskEngineState) DockerIDByV3EndpointID(v3EndpointID string) (string, bool) {
	state.lock.RLock()
	defer state.lock.RUnlock()

	dockerID, ok := state.v3EndpointIDToDockerID[v3EndpointID]
	return dockerID, ok
}
// DockerIDByV3EndpointID returns a docker ID for a given v3 endpoint ID