update versions

Dockerfile

 FROM openjdk:8-jdk as builder
 
 # define arguments for versions to be used for platform and build tools
-ARG PLATFORM=31
-ARG BUILD_TOOLS=32.0.0
+ARG PLATFORM=32
+ARG PLATFORM_TOOLS=34.0.1
+ARG BUILD_TOOLS=30.0.3
 
 RUN apt-get --quiet update --yes && \
     apt-get --quiet install --yes wget tar unzip lib32stdc++6 lib32z1
@@ -16,6 +17,7 @@ RUN android-sdk-linux/tools/bin/sdkmanager --update > /dev/null
 RUN android-sdk-linux/tools/bin/sdkmanager \
         "platforms;android-${PLATFORM}" \
         "build-tools;${BUILD_TOOLS}" \
+        "platform-tools;${PLATFORM_TOOLS}" \
         "extras;google;m2repository" \
         "extras;android;m2repository" > /dev/null
 
@@ -25,4 +27,5 @@ ENV PATH=$PATH:$ANDROID_HOME/platform-tools/
 ENV ANDROID_SDK_ROOT=$PWD/android-sdk-linux
 ENV PLATFORM=$PLATFORM
 ENV BUILD_TOOLS=$BUILD_TOOLS
+ENV PLATFORM_TOOLS=$PLATFORM_TOOLS
 ENV GRADLE_OPTS="-Dorg.gradle.daemon=False"