cd "$( cd "$( dirname "$0" )" && pwd )/.." echo $KEY_FILE_BASE64 > key.jks.base64 base64 -d key.jks.base64 > key.jks echo $KEY_PASSWORD | ANDROID_HOME/build-tools/30.0.2/apksigner sign --ks key.jks build/app/outputs/flutter-apk/app-release.apk