How to build?

[janci007]

I built this in https://hub.docker.com/r/mingc/android-build-box/ with gradle 4.1. The build is successful, however when I try to upload the APK (app/build/outputs/apk/debug/app-debug.apk) via pmca-console, it says: Warning: Invalid apk file and Exception: Communication error 100: Error completed

Is there an post-build step to prepare the APK for the camera or something?