Add image replicate support (#285)

* Add image replicate support

* Update test

* Update a test case

.web-docs/components/builder/linode/README.md

@@ -123,6 +123,8 @@ can also be supplied to override the typical auto-generated key:
 
 - `firewall_id` (int) - The ID of the Firewall to attach this Linode to upon creation.
 
+- `image_regions` ([]string) - The regions where the outcome image will be replicated to.
+
 <!-- End of code generated from the comments of the Config struct in builder/linode/config.go; -->
 
 

builder/linode/config.go

@@ -152,6 +152,9 @@ type Config struct {
 
 	// The ID of the Firewall to attach this Linode to upon creation.
 	FirewallID int `mapstructure:"firewall_id" required:"false"`
+
+	// The regions where the outcome image will be replicated to.
+	ImageRegions []string `mapstructure:"image_regions" required:"false"`
 }
 
 func createRandomRootPassword() (string, error) {

builder/linode/config_test.go

@@ -24,7 +24,8 @@ func TestPrepare(t *testing.T) {
 
 		Region:       "us-ord",
 		InstanceType: "g6-standard-1",
-		Image:        "linode/debian10",
+		Image:        "linode/debian12",
+		ImageRegions: []string{"us-ord", "us-mia", "us-lax"},
 	}
 
 	warnings, err := config.Prepare()

builder/linode/step_create_image.go

@@ -45,6 +45,22 @@ func (s *stepCreateImage) Run(ctx context.Context, state multistep.StateBag) mul
 		return handleError("Failed to wait for image creation", err)
 	}
 
+	if len(c.ImageRegions) > 0 {
+		image, err = s.client.ReplicateImage(ctx, image.ID, linodego.ImageReplicateOptions{
+			Regions: c.ImageRegions,
+		})
+		if err != nil {
+			return handleError("Failed to replicate the image", err)
+		}
+
+		for _, r := range c.ImageRegions {
+			_, err = s.client.WaitForImageRegionStatus(ctx, image.ID, r, linodego.ImageRegionStatusAvailable)
+			if err != nil {
+				return handleError("Failed to wait for the image replication", err)
+			}
+		}
+	}
+
 	image, err = s.client.GetImage(ctx, image.ID)
 	if err != nil {
 		return handleError("Failed to get image", err)