Please provide "community" Docker image source

Summary

Looking for IS_EMULATOR variable in build.sh, inside "community" Docker image, we were unable to find it.
This keyword is present in "master" branch in Gitlab (https://gitlab.e.foundation/e/os/docker-lineage-cicd/-/blob/master/src/build.sh).
Furthermore, we were unable to find a build.sh in Gitlab, with "# Copyright (C) 2020 eCorp Romain HUNAULT romain.hunaul@e.email" in header (this line is from build.sh, in a running up-to-date "community" container ...).

Description

What is the current behavior?

One is unable to find the "community" Docker image build sources.

What is the improved behavior?

Users should be able to access the build sources.

What does it bring?

Open mind ;)

Examples

Please see https://community.e.foundation/t/android-emulator-image/44392.

Validation

User be able to find the content of "community" image in Gitlab, and rebuild it himself.