docker pull jedie/buildozer
docker build -t jedie/buildozer .
keytool -genkey -v -keystore debug.keystore -alias android -keyalg RSA -keysize 2048 -validity 20000
docker run -t jedie/buildozer -v ${PWD}:/buildozer/ buildozer --verbose android release
jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore debug.keystore bin/yourapkalign.apk android
zipalign -v 4 yourapk.apk yourapkalign.apk
adb install PingApp-0.1-release-unsigned.apk