I have to deploy my own App inventor instance but how to make a custom Auth System instead of the normal login page?
I saw a recently saw a new app inventor instance that is Niotron, when I open https://builder.niotron.com/ it takes me to https://my.niotron.com/?mode=auth&cback=https://builder.niotron.com/login.jsp
then when I login there I go again to the builder with a callback URL https://builder.niotron.com/login.jsp?data=somedata&authKey=somedata