We were able to successfully connect to the Appservice container using the remote shell using below az command.
az webapp create-remote-connection --subscription ******** --resource-group myrg -n mywebapp &
we were able succesfully ssh to the appservice container with the given port with root user and password.
ssh root@127.0.0.1 -p 359xx
But when we tried to copy files from local machine to the container,its throwing permission denied.
scp -p 359XX myfile root@127.0.0.1:/tmp/
I succeeded with:
rsync -az --bwlimit=500 -e 'ssh -p <port> -c aes256-cbc' ./database.sql.tar.gz root@127.0.0.1:~/
The --bwlimit bandwidth limit argument was the success factor.
In my case I had to specify the cypher algorithm(-c aes256-cbc) but if you can ssh without then in the rsync command you don't need it as well.