@@ -13,6 +13,7 @@ type ContainerSpec struct {

 	Labels          map[string]string       `json:",omitempty"`

 	Command         []string                `json:",omitempty"`

 	Args            []string                `json:",omitempty"`

+	Hostname        string                  `json:",omitempty"`

 	Env             []string                `json:",omitempty"`

 	Dir             string                  `json:",omitempty"`

 	User            string                  `json:",omitempty"`

@@ -33,6 +33,7 @@ func newCreateCommand(dockerCli *command.DockerCli) *cobra.Command {

 	flags.VarP(&opts.labels, flagLabel, "l", "Service labels")

 	flags.Var(&opts.containerLabels, flagContainerLabel, "Container labels")

+	flags.StringVar(&opts.hostname, flagHostname, "", "Container hostname")

 	flags.VarP(&opts.env, flagEnv, "e", "Set environment variables")

 	flags.Var(&opts.envFile, flagEnvFile, "Read in a file of environment variables")

 	flags.Var(&opts.mounts, flagMount, "Attach a filesystem mount to the service")

@@ -316,6 +316,7 @@ type serviceOptions struct {

 	containerLabels opts.ListOpts

 	image           string

 	args            []string

+	hostname        string

 	env             opts.ListOpts

 	envFile         opts.ListOpts

 	workdir         string

@@ -387,6 +388,7 @@ func (opts *serviceOptions) ToService() (swarm.ServiceSpec, error) {

 				Image:           opts.image,

 				Args:            opts.args,

 				Env:             currentEnv,

+				Hostname:        opts.hostname,

 				Labels:          runconfigopts.ConvertKVStringsToMap(opts.containerLabels.GetAll()),

 				Dir:             opts.workdir,

 				User:            opts.user,

@@ -486,6 +488,7 @@ const (

 	flagContainerLabelRemove  = "container-label-rm"

 	flagContainerLabelAdd     = "container-label-add"

 	flagEndpointMode          = "endpoint-mode"

+	flagHostname              = "hostname"

 	flagEnv                   = "env"

 	flagEnvFile               = "env-file"

 	flagEnvRemove             = "env-rm"

@@ -13,14 +13,15 @@ import (

 func containerSpecFromGRPC(c *swarmapi.ContainerSpec) types.ContainerSpec {

 	containerSpec := types.ContainerSpec{

-		Image:   c.Image,

-		Labels:  c.Labels,

-		Command: c.Command,

-		Args:    c.Args,

-		Env:     c.Env,

-		Dir:     c.Dir,

-		User:    c.User,

-		Groups:  c.Groups,

+		Image:    c.Image,

+		Labels:   c.Labels,

+		Command:  c.Command,

+		Args:     c.Args,

+		Hostname: c.Hostname,

+		Env:      c.Env,

+		Dir:      c.Dir,

+		User:     c.User,

+		Groups:   c.Groups,

 	}

 	// Mounts

@@ -67,14 +68,15 @@ func containerSpecFromGRPC(c *swarmapi.ContainerSpec) types.ContainerSpec {

 func containerToGRPC(c types.ContainerSpec) (*swarmapi.ContainerSpec, error) {

 	containerSpec := &swarmapi.ContainerSpec{

-		Image:   c.Image,

-		Labels:  c.Labels,

-		Command: c.Command,

-		Args:    c.Args,

-		Env:     c.Env,

-		Dir:     c.Dir,

-		User:    c.User,

-		Groups:  c.Groups,

+		Image:    c.Image,

+		Labels:   c.Labels,

+		Command:  c.Command,

+		Args:     c.Args,

+		Hostname: c.Hostname,

+		Env:      c.Env,

+		Dir:      c.Dir,

+		User:     c.User,

+		Groups:   c.Groups,

 	}

 	if c.StopGracePeriod != nil {

@@ -128,6 +128,7 @@ func (c *containerConfig) config() *enginecontainer.Config {

 	config := &enginecontainer.Config{

 		Labels:      c.labels(),

 		User:        c.spec().User,

+		Hostname:    c.spec().Hostname,

 		Env:         c.spec().Env,

 		WorkingDir:  c.spec().Dir,

 		Image:       c.image(),

@@ -32,6 +32,7 @@ Options:

       --health-retries int               Consecutive failures needed to report unhealthy

       --health-timeout duration          Maximum time to allow one check to run

       --help                             Print usage

+      --hostname                         Service containers hostname

   -l, --label value                      Service labels (default [])

       --limit-cpu value                  Limit CPUs (default 0.000)

       --limit-memory value               Limit Memory (default 0 B)

@@ -134,6 +135,12 @@ This sets environmental variables for all tasks in a service. For example:

 $ docker service create --name redis_2 --replicas 5 --env MYVAR=foo redis:3.0.6

 ```

+### Create a docker service with specific hostname (--hostname)

+

+This option sets the docker service containers hostname to a specific string. For example:

+```bash

+$ docker service create --name redis --hostname myredis redis:3.0.6

+```

 ### Set metadata on a service (-l, --label)

 A label is a `key=value` pair that applies metadata to a service. To label a