diff --git a/Dockerfile.openj9 b/Dockerfile.openj9
index 0a87b09..9f3cda6 100644
--- a/Dockerfile.openj9
+++ b/Dockerfile.openj9
@@ -56,14 +56,15 @@ ENV JAVA_HOME=/build/src/build/linux-x86_64-server-release/images/jre
 ENV PATH="$JAVA_HOME/bin:$JAVA_HOME/lib:$PATH"
 ENV TEST_JDK_HOME=/build/src/build/linux-x86_64-server-release/images/jdk
 ENV TEST_ROOT=/build/openj9-repo/test
+ENV DIAGNOSTICLEVEL=nodetails
 
 RUN git clone --depth=1 https://github.com/eclipse-openj9/openj9.git /build/openj9-repo
 
 RUN cd /build/openj9-repo/test \
      && git clone https://github.com/adoptium/TKG.git \
      && cd TKG \
-     && make compile JOBS=$(nproc) \
-     && make _sanity.functional.regular JOBS=$(nproc)
+     && make compile -j$(nproc) \
+     && make _sanity.functional.regular -j$(nproc)
 
 
 WORKDIR /build/src/build/linux-x86_64-server-release/images