How to use a custom domain with a Azure Container App?

Question

I created two Azure Container App inside an Container App Environment; Then they got URLs similar to this:

backend.agreeablehill-XYZABC.canadacentral.azurecontainerapps.io

my-container-app.agreeablehill-XYZABC.canadacentral.azurecontainerapps.io

Both of which have a static IP Address like this [2*.1**.2**.1**] If I access the Web Browser on these URL the Apps respond the expected content and HTTP 200 OK

Then I accessed CloudFlare Panel for my domain and created two CNAME records on the DNS:

Type: CNAME
Name: backend
Content: backend.agreeablehill-XYZABC.canadacentral.azurecontainerapps.io

Type: CNAME
Name: app
Content: my-container-app.agreeablehill-XYZABC.canadacentral.azurecontainerapps.io

Now if I PING backend.mydomainxyz.com or app.mydomainxyz.com the DNS correctly resolves the domain to the static IP address. But If I open the URL in the Web Browser, then it gives an HTTP 404 ERROR

How to use a custom domain with a Azure Container App?

Update: "Not yet. Coming in next few weeks. For now you’d have to wrap with like API M or Azure front door to provide till then", Jeff Hollan.