Folder modules with api in jitsi-meet-web docker image

Where i find the Docker image is a folder jitsi-meet / modules / API /
because I have to change something. But in jitsi-meet-web I can’t find it. I have downloaded all Debian packages from jitsi-web Dockerfile but still cannot find it in them.

please help me i have the same problem, du you have answer for this problem?