feat: update sdk

.gitignore

+*.iml
+/.idea/*
+!/.idea/copyright/
+.DS_Store

Dockerfile

 FROM openjdk:8-jdk as builder
 
 # define arguments for versions to be used for platform and build tools
-ARG PLATFORM=32
+ARG PLATFORM=31
 ARG BUILD_TOOLS=32.0.0
 
 RUN apt-get --quiet update --yes && \