I'm trying to setup a MS SQL data base in a docker container as PDM database. 

I tried both, Developer Express version of MS SQL 2017:

• Microsoft SQL Server 2017 (RTM-CU21) (KB4557397) - 14.0.3335.7 (X64)   Jun 12 2020 20:39:00   Copyright (C) 2017 Microsoft Corporation  Developer Edition (64-bit) on Linux (Ubuntu 16.04.6 LTS)
• Microsoft SQL Server 2017 (RTM-CU21) (KB4557397) - 14.0.3335.7 (X64)   Jun 12 2020 20:39:00   Copyright (C) 2017 Microsoft Corporation  Express Edition (64-bit) on Linux (Ubuntu 16.04.6 LTS)

If I want to connect from SOLIDWORKS PDM Administration (2020), I just get an error message:

The socket was closed gracefully on the other end.

The log entry on the data base side is as follows: 

Length specified in network packet payload did not match number of bytes read;  the connection has been closed. Please contact the vendor of the client library.

I have no problems acessing the data base using Microsoft's SQL Server Management Studio.

Is there an incompatibility problem with Microsoft SQL Server running on Linux (Docker)?