I am using gorilla/mux router

but it gives me error cannot use listContainers(docker) (type http.Handler) as type func(http.ResponseWriter, *http.Request) in argument to router.HandleFunc

func listContainers(client *client.Client) http.Handler {

docker := client

return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {

log.Println(“Listing containers”)

containers, err := docker.ContainerList(context.Background(), types.ContainerListOptions{})

if err != nil {

panic(err)

}

w.Header().Set(“Content-Type”, “application/json”)

json.NewEncoder(w).Encode(containers)

})

}

func ContainerHandler(router *mux.Router) {

DOCKER_HOST := “unix://var/run/docker.sock”

DOCKER_API_VERSION := “1.40”

docker, err := client.NewClient(DOCKER_HOST, DOCKER_API_VERSION, nil, nil)

if err != nil {

panic(err)

}

log.Println(“Successfully Connected to Docker Daemon”)

router.HandleFunc(“/containers/list”, listContainers(docker))

}