add label support to docker container resource

builtin/providers/docker/resource_docker_container.go

@@ -172,6 +172,12 @@ func resourceDockerContainer() *schema.Resource {
 				ForceNew: true,
 			},
 
+			"labels": &schema.Schema{
+				Type:     schema.TypeMap,
+				Optional: true,
+				ForceNew: true,
+			},
+
 			"memory": &schema.Schema{
 				Type:     schema.TypeInt,
 				Optional: true,

builtin/providers/docker/resource_docker_container_funcs.go

@@ -82,6 +82,10 @@ func resourceDockerContainerCreate(d *schema.ResourceData, meta interface{}) err
 		createOpts.Config.Volumes = volumes
 	}
 
+	if v, ok := d.GetOk("labels"); ok {
+		createOpts.Config.Labels = mapLabels(v.(map[string]interface{}))
+	}
+
 	var retContainer *dc.Container
 	if retContainer, err = client.CreateContainer(createOpts); err != nil {
 		return fmt.Errorf("Unable to create container: %s", err)
@@ -255,6 +259,14 @@ func stringSetToStringSlice(stringSet *schema.Set) []string {
 	return ret
 }
 
+func mapLabels(labels map[string]interface{}) map[string]string {
+	mapped := make(map[string]string, len(labels))
+	for k, v := range labels {
+		mapped[k] = v.(string)
+	}
+	return mapped
+}
+
 func fetchDockerContainer(name string, client *dc.Client) (*dc.APIContainers, error) {
 	apiContainers, err := client.ListContainers(dc.ListContainersOptions{All: true})
 

builtin/providers/docker/resource_docker_container_test.go

@@ -55,6 +55,11 @@ func TestAccDockerContainer_customized(t *testing.T) {
 		if c.HostConfig.CPUShares != 512 {
 			return fmt.Errorf("Container has wrong cpu shares setting: %d", c.HostConfig.CPUShares)
 		}
+
+		if c.Config.Labels["env"] != "prod" || c.Config.Labels["role"] != "test" {
+			return fmt.Errorf("Container does not have the correct labels")
+		}
+
 		return nil
 	}
 
@@ -129,5 +134,9 @@ resource "docker_container" "foo" {
   memory = 128
   memory_swap = 128
   cpu_shares = 512
+  labels {
+    env = "prod"
+    role = "test"
+  }
 }
 `

website/source/docs/providers/docker/r/container.html.markdown

@@ -44,6 +44,7 @@ The following arguments are supported:
     `["/usr/bin/myprogram"]`.
 * `dns` - (Optional, set of strings) Set of DNS servers.
 * `env` - (Optional, set of strings) Environmental variables to set.
+* `labels` - (Optional) Key/value pairs to set as labels on the container.
 * `links` - (Optional, set of strings) Set of links for link based
   connectivity between containers that are running on the same host.
 * `hostname` - (Optional, string) Hostname of the container.