> I don't think azure-docs repo is the right place to ask for help/suggestions as maintainers are not very responsive because their sole job is to push internal docs to public docs.

What place would you suggest? We had bad experience with Azure support we could never fight through on the first support line.

> However, I believe you could have set up "public IP prefix" using azure cli. I do not think you needs a azure managed firewall.

I don't have deep experience in networking stuff on Azure so my understanding can be wrong, but I think "public ip prefix" is just a group of continuous IP addresses what you can reserve. You still need to assign those to something eg a NAT Gateway. As far as I know you cannot assign them directly to an Container Instance.