The image from the Marketplace is a generalized one so that it requires a minimal set-up before using the apps. This set-up is automated with the file azure_setup. To run it:

1. Move to the /opt subdirectory (i.e. $ cd /opt)
2. Run the file as user (not as root) and choose whether you are going to use EPYC 2 or EPYC 3 processors (e.g $ azure_setup zen2 or $ azure_setup zen 3). Here, the valid options are zen2, ZEN2, epyc2, EPYC2, zen3, ZEN3, epyc3 and EPYC3). If no option is specified, the setup will assume EPYC 2.
3. Open a new window so that all changes become effective (you do not need to reboot the system).
4. Once the set-up is complete, you can move move to your home directory (i.e. $ cd or $ cd  /home/$USER) and the apps will be there.