This post shows how to get a Docker container running with SQL Server Express on Linux using port and volume mapping. It also shows a few commands to create a login and database.Check It Out!
Entity Framework is an object-relational mapping framework for Microsoft .NET. Check out some of my posts that display some example functionality.
Dynamics AX is Microsoft's leading ERP solution that allows for extensive customizations. This opens the door for developing the exact solution for your customer.