xvrl commented on code in PR #13059:
URL: https://github.com/apache/druid/pull/13059#discussion_r967245125


##########
distribution/docker/Dockerfile:
##########
@@ -29,27 +31,29 @@ RUN export DEBIAN_FRONTEND=noninteractive \
 
 COPY . /src
 WORKDIR /src
-RUN if [ "$BUILD_FROM_SOURCE" = "true" ]; then \
+RUN --mount=type=cache,target=/root/.m2 if [ "$BUILD_FROM_SOURCE" = "true" ]; 
then \
       mvn -B -ff -q dependency:go-offline \
       install \
       -Pdist,bundle-contrib-exts \
       -Pskip-static-checks,skip-tests \
       -Dmaven.javadoc.skip=true \
       ; fi
 
-RUN VERSION=$(mvn -B -q 
org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate \
+RUN --mount=type=cache,target=/root/.m2 VERSION=$(mvn -B -q 
org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate \
       -Dexpression=project.version -DforceStdout=true \
     ) \
  && tar -zxf ./distribution/target/apache-druid-${VERSION}-bin.tar.gz -C /opt \
  && mv /opt/apache-druid-${VERSION} /opt/druid
 
 FROM amd64/busybox:1.30.0-glibc as busybox
 
-FROM gcr.io/distroless/java:$JDK_VERSION
+FROM gcr.io/distroless/java$JDK_VERSION-debian11
 LABEL maintainer="Apache Druid Developers <[email protected]>"
 
 COPY --from=busybox /bin/busybox /busybox/busybox
 RUN ["/busybox/busybox", "--install", "/bin"]
+RUN wget 
https://github.com/robxu9/bash-static/releases/download/5.1.016-1.2.3/bash-linux-x86_64
 -O /bin/bash \
+ && chmod 755 /bin/bash

Review Comment:
   how much work would it be to fix the script to not use bash specific 
constructs?
   If we are going to install bash or other things, maybe it would make sense 
to switch to a openjdk debian-slim image that already includes it



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