Add CNAME setup for mcp-dev.synapse.org for DNS forwarding

Author: BryanFauble

org-formation/800-redirects/_tasks.yaml

@@ -241,6 +241,22 @@ SynapseDockerRegistryProdDnsForward:
     # the value of the CNAME record
     TargetHostName: !CopyValue ['registry-prod-DockerFargateStack-LoadBalancerDNS', !Ref SynapseProdAccount]
 
+# forward docker.synapse.org to prod' Synapse Docker registry ALB
+SynapseMCPDevDnsForward:
+  Type: update-stacks
+  Template: https://raw.githubusercontent.com/Sage-Bionetworks/aws-infra/v0.6.9/templates/R53/cname.yaml
+  StackName: !Sub '${resourcePrefix}-synapse-mcp-dev-cname'
+  StackDescription: Setup a CNAME for snypase-mcp-server dev ALB
+  DefaultOrganizationBindingRegion: !Ref primaryRegion
+  DefaultOrganizationBinding:
+    Account: !Ref SynapseProdAccount
+  Parameters:
+    # the name of the CNAME record
+    SourceHostName: "mcp-dev.synapse.org"
+    # ID of the synapse.org zone (in Synapse prod account)
+    SourceHostedZoneId: ZHAU99KV4A1WU
+    # the value of the CNAME record
+    TargetHostName: !CopyValue "synaps-AppLo-eUrDchB5Y55d-1276030746.us-east-1.elb.amazonaws.com"
 
 # forward dev.sagedpe.org to dev EKS stack ALB in org-sagebase-dnt-dev
 # apps are setup with terraform at https://github.com/Sage-Bionetworks-Workflows/eks-stack