It’s in a file called
config.json. Edit it on your Docker host, not inside the Enketo container, to make your changes persist. I’m not sure how you have your volumes mapped, but a command like
$ docker inspect kobodocker_enketo_express_1 | grep 'Source.*config.json'
should return the answer, e.g.
You may need to replace
kobodocker_enketo_express_1 with the actual name of your Enketo container (get this from
Have a look at the template
config.json used by kobo-install for the place where you should place the Google API key:
Other things that can go in
config.json are described by https://enketo.github.io/enketo-express/tutorial-10-configure.html.