Can't find / create the api key in docker container

[Jegine]

Hey everyone,

I'm trying to run etherpad as Docker container with the official etherpad image. To connect other applications to etherpad I need the api key from the etherpad instance.
I read through several resources and came across the APIKEY.txt file, which should be stored in the etherpad-lite folder. I can't find such a file in the entire container. I also tried to create a new file, but the etherpad instance doesn't seem to use it.
Is there an additional setting I have to make? In which exact location must the file be stored?

Thank you.

[claire-yq]

I believe the default authentication method is now OAuth2.0. If you want APIKEY.txt to be generated, try changing "authenticationMethod" to "apikey" in your settings.json.

[Jegine]

@sunshower7 Thank you very much. Setting the authenticationMethod to ${AUTHENTICATION_METHOD:apikey} worked for me.