RTC fec.exe command has no output
One answer
The issue is not related to docker. found fec.exe can't run either in my Windows server 2022 VM as well when I did another test.
We saw a popup window indicating MSVCP100.dll is missing, found it is a common issue and this link:
https://www.ibm.com/support/pages/msvcp100dll-missing
Then by following the download page of the link, I got the vcredist_x86.exe file of VC++ 2010 redistributable package and after installing it, fec.exe is working.
The key is the popup dialog which helps to define the problem.