@LeandroStanger thanks for the tip, but I have some difficulty to folow your suggestion:
Searching for VisualStudio with AppCenter finds me also a standalone version of a podman 3.2.3 flatpak runtime. I tried that first, but it did not work, I get:
flatpak --devel --command=podman -help run com.visualstudio.code.tool.podman Usage: flatpak run [OPTION…] APP [ARGUMENT…] - Run an appHelp Options:
-h, --help Show help options
–help-all Show all help options
which is apparently the flatpak help, so I dropped -help from the command line and got:
$ flatpak --devel --command=podman run com.visualstudio.code.tool.podman
bwrap: execvp podman: No such file or directory
I installed the main package also, but there is not any change in the error message.
In some sense, it boils down to be very similar to my other open question (see How to run a bash using the ffmpeg runtime).