ACI: 'run' command fails to create UDP protocol binding for public IP address

[karolz-ms]

Steps to reproduce the issue:

1. Create ACI Docker context e.g. 'acictx'
2. docker --context acictx run -d -p 12345/udp some-udp-based-network-service-image

Describe the results you received:
No errors/warnings, but the public IP address created as part of the ACI container group is using TCP protocol

Describe the results you expected:
The public IP address created as part of the ACI container group should use UDP protocol

Additional information you deem important (e.g. issue happens only occasionally):
You can verify the protocol used by the IP address with Azure CLI (az container show). Deploying via az container create works as expected (UDP protocol binding is created and communication works).

Tried on Docker Desktop for Mac 2.5.2 (50156). Also tried on Ubuntu Linux with the same effect.