// +build experimental package runconfig import flag "github.com/docker/docker/pkg/mflag" type experimentalFlags struct { flags map[string]interface{} } func attachExperimentalFlags(cmd *flag.FlagSet) *experimentalFlags { flags := make(map[string]interface{}) flags["volume-driver"] = cmd.String([]string{"-volume-driver"}, "", "Optional volume driver for the container") return &experimentalFlags{flags: flags} } func applyExperimentalFlags(exp *experimentalFlags, config *Config, hostConfig *HostConfig) { config.VolumeDriver = *(exp.flags["volume-driver"]).(*string) }