An alternative docker instructions (#722)
An alternative docker instructions (#722)

* An alternative docker instructions

* Add code prefix to `az` text

* ~/.azure2 to ~/.azure in doc

yugangw-msft/azure-cli,yugangw-msft/azure-cli,yugangw-msft/azure-cli,yugangw-msft/azure-cli,QingChenmsft/azure-cli,samedder/azure-cli,samedder/azure-cli,samedder/azure-cli,yugangw-msft/azure-cli,QingChenmsft/azure-cli,QingChenmsft/azure-cli,QingChenmsft/azure-cli,samedder/azure-cli,BurtBiel/azure-cli,BurtBiel/azure-cli,yugangw-msft/azure-cli