Azure Storage Account /.well-known/

I was really struggling to figure out a way of creating the path /.well-known/ in a standard Azure storage account. This was to allow a simple set of files for an iOS and Android app to allow them to be verified. I could neither create a container with this name or name the blob with .Well-Known/ at the start of it.

As we use Azure Application Gateway I worked out that the /.well-known/ path can be emulated with path based routing and aliasing it to the root of the storage account.

There may be simpler methods but this worked for me. I created two paths to the same root with some variables similar to these :

# appmanifest is a template for routing to a storage account, storage account name is defined elsewhere.
appmanifest = {
  waf_hostname                  = "app"
  waf_probe_path                = "/hello.txt"
  waf_backend_path              = "/"
  waf_request_routing_rule_type = "PathBasedRouting"
  waf_url_path_map = {
    appmanifest-default   = "/*"
    appmanifest-wellknown = "/.well-known/*"
  }
}