Let's write a guide on how to tail the pantheon/fpm logs.

I think it is as easy as:

lando logs -s appserver -f

That seems to spit out the PHP errors when I create a syntax error or undefined function in my Pantheon app.

Let's turn it into a guide: https://docs.lando.dev/contrib/guides-intro.html

@njcurtis3 reported that he's unable to get any files under ./data, which means no access to ambianic edge logs.

We should make sure that ambianic edge logs at error and exception level are routed not only to app files but also to standard output and error. This will enable problems like the one Nathan reported to be seen on docker console output and via docker-compose logs.