Save Multiple Wifi Connections

I am using dietpi with a RaspberryPi Zero and as such don’t have an Ethernet connection.
The only way I can access it is via ssh or by mounting the SDCard.

Things work OK when I am in my house, but when I go elsewhere I can’t access it unless I take out the SDCard and modify /boot/dietpi.txt with the new SSID and password.

How do I configure it to store 3 or 4 common wifi connections?

This is not possible at the moment. Mainly due to the minimalist way DietPi uses the /etc/network/interfaces file.

I’ll add a request for this feature to be added to DietPi. You can track it here: https://github.com/Fourdee/DietPi/issues/368