I spent half a day trying to figure out why I could connect to my SQL Server Docker container with multiple tools (Aginity Pro, Azure Data Studio, VSCode, sqlcmd), but I could not connect using "localhost:1433" as the server name via PBI Desktop.
When you open PBI Desktop and navigate to Get Data > SQL Server, the information icon next to the Server textbox says to use "servername:port" which only ever sent back errors when attempting to connect to my Docker container. I thought something port/tcp setting was incorrect within Docker, but I was finally able to connect using "localhost, 1433" instead of the "servername:port" format. The only reason I ended up being able to connect was from another user mentioning to use "localhost, 1433" as the Server.
It would be beneficial for PBI Desktop to either: auto-resolve "localhost:1433" when connecting to a Docker container, or to include all combinations of connection strings inside of the information icon 🙂
