View source for Auto start firefox-esr in kiosk mode on boot

#Create the autostart directory:
 mkdir -p /home/<USER>/.config/autostart
#Open a new text file in your preferred editor.
#Add the following three lines:
 [Desktop Entry]
 Type=Application
 Exec=mousepad
Replace mouespad with the command of your choice.
#Save in /home/<USER>/.config/autostart with a name ending in .desktop e.g.
 mousepad.desktop
#Logout and login or reboot.