How to use this

Create the builder image

From inside the checked out syncthing-android repository, run:

docker build -t syncthing-android-builder:latest -f ./docker/Dockerfile .

Build the app

1. From inside the checked out syncthing-android repository, run: git submodule init; git submodule update
2. Actual build: docker run --rm -v /tmp/syncthing-android:/mnt syncthing-android-builder ./gradlew buildNative assembleDebug
3. Retrieve APKs from ./app/build/outputs