Make JAVA_HOME platform independent

android-sdk/Dockerfile

@@ -51,7 +51,8 @@ RUN mkdir -p ${ANDROID_HOME}/cmdline-tools && \
     rm *tools*linux*.zip
 
 # set the environment variables
-ENV JAVA_HOME /usr/lib/jvm/java-${JDK_VERSION}-openjdk-amd64
+RUN JAVA_HOME=$(ls -d /usr/lib/jvm/java-${JDK_VERSION}-openjdk-* | head -n 1) && \
+    echo "export JAVA_HOME=$JAVA_HOME" > /tmp/java_home.sh
 ENV GRADLE_HOME /opt/gradle
 ENV KOTLIN_HOME /opt/kotlinc
 ENV PATH ${PATH}:${GRADLE_HOME}/bin:${KOTLIN_HOME}/bin:${ANDROID_HOME}/cmdline-tools/latest/bin:${ANDROID_HOME}/cmdline-tools/tools/bin:${ANDROID_HOME}/platform-tools:${ANDROID_HOME}/emulator
@@ -93,5 +94,9 @@ RUN apt-get update && \
     done && \
     (rm /tmp/*.pub 2> /dev/null || true)
 
+ADD entrypoint.sh /tmp/entrypoint.sh
+RUN chmod +x /tmp/entrypoint.sh
+ENTRYPOINT ["/tmp/entrypoint.sh"]
+
 ADD supervisord.conf /etc/supervisor/conf.d/
 CMD ["/usr/bin/supervisord"]

android-sdk/entrypoint.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+if [ -f /tmp/java_home.sh ]; then
+  source /tmp/java_home.sh
+fi
+
+exec "$@"