fix: Add '.' to name regex in ami_distribution_configuration block for aws_imagebuilder_distribution_configuration

.changelog/36659.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+resource/aws_imagebuilder_distribution_configuration: Fix validation regex for `ami_distribution_configuration.name`
+```

internal/service/imagebuilder/distribution_configuration.go

@@ -121,7 +121,7 @@ func ResourceDistributionConfiguration() *schema.Resource {
 										Optional: true,
 										ValidateFunc: validation.All(
 											validation.StringLenBetween(0, 127),
-											validation.StringMatch(regexache.MustCompile(`^[0-9A-Za-z_{-][0-9A-Za-z_\s:{}-]+[0-9A-Za-z_}-]$`), "must contain only alphanumeric characters, underscores, and hyphens"),
+											validation.StringMatch(regexache.MustCompile(`^[0-9A-Za-z_{-][0-9A-Za-z_\.\s:{}-]+[0-9A-Za-z_}-]$`), "must be a valid output AMI name"),
 										),
 									},
 									"target_account_ids": {

internal/service/imagebuilder/distribution_configuration_test.go

@@ -447,6 +447,18 @@ func TestAccImageBuilderDistributionConfiguration_DistributionAMIDistribution_na
 					}),
 				),
 			},
+			{
+				Config: testAccDistributionConfigurationConfig_amiName(rName, "AmazonLinux2-EKS-1.27-{{ imagebuilder:buildDate }}"),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckDistributionConfigurationExists(ctx, resourceName),
+					acctest.CheckResourceAttrRFC3339(resourceName, "date_updated"),
+					resource.TestCheckResourceAttr(resourceName, "distribution.#", "1"),
+					resource.TestCheckTypeSetElemNestedAttrs(resourceName, "distribution.*", map[string]string{
+						"ami_distribution_configuration.#":      "1",
+						"ami_distribution_configuration.0.name": "AmazonLinux2-EKS-1.27-{{ imagebuilder:buildDate }}",
+					}),
+				),
+			},
 		},
 	})
 }