Why I did it
This is part of Python3 migration project.
This pipeline will build sonic-mgmt-docker with both Python2 and Python3.
The main difference between legacy sonic-mgmt-docker and now is:
make LEGACY_SONIC_MGMT_DOCKER=y target/docker-sonic-mgmt.gz
docker tag docker-sonic-mgmt $REGISTRY_SERVER/docker-sonic-mgmt:legacy
Work item tracking
Microsoft ADO (number only): 25254349
How I did it
Add pipeline file.