I was playing around with my containers last week and as you mentioned, I noticed that Microsoft is no longer supporting SQL Server on windows containers. I have orchestrated several practice containers using MS SQL, Postgres and MySQL, and about a year ago, I built one by hand, importing the setup into the container. Not ideal as I didn't understand layering and I had to remove that form my PC. The one thing I noticed is that even with microsoft or docker continuumio pre built containers, (not just SQL containers) when I inspect the final build, there are often unresolved security issues. I haven't found a reliable source of information for making corrections. Also, the last Stairway I saw on containers had three steps. I was looking the other day and saw what I hope is an updated stairway on containers. I'm currently in a training class but hope to review that in a few weeks. Also, great tip on pulling the Enterprise version of SQL. I didn't know that was available. Thanks!