How do I create a desktop shortcut for nnn file manager on Linux Mint 19.3

If I create an application launcher with the following command: mate-terminal -e /usr/local/bin/nnn a terminal opens and runs nnn. However, nnn doesn't have a configuration file and settings such as bookmarks are read from environment variables written in ~/.bashrc. When the above launcher command is executed, nnn is not reading its variables from .bashrc, so no bookmarks. If I open a terminal and then type 'nnn' everything runs normally.