(bookkeeper) branch master updated: improve: use jlink to reduce jdk size in the image (#4456)

[shoothzj]

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shoothzj pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/bookkeeper.git


The following commit(s) were added to refs/heads/master by this push:
     new 123316beca improve: use jlink to reduce jdk size in the image (#4456)
123316beca is described below

commit 123316beca36e15d6742121bc2a18805264c00b7
Author: Zixuan Liu <node...@gmail.com>
AuthorDate: Wed Jul 3 08:04:59 2024 +0800

    improve: use jlink to reduce jdk size in the image (#4456)
    
    ### Motivation
    
    Reference: https://adoptium.net/blog/2021/08/using-jlink-in-dockerfiles
    
    Reduce size: 398.23 MB -> 245.23 MB
    
    New 
image:https://hub.docker.com/layers/nodece/bk/4.17.1-jlink/images/sha256-73c8354a981d7dfefcb1247cf84f6c3e91db2342431749e528ba8468c65be1f5?context=explore
    
    Old image: 
https://hub.docker.com/layers/apache/bookkeeper/4.17.1/images/sha256-342f384bc21b4d31d5349f741cf831f3c5bb47dfea34557104528ccd9597810f?context=explore
    
    
    ### Changes
    
    - Using jlink to compress the JDK and then copy that to the base image
---
 docker/Dockerfile | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/docker/Dockerfile b/docker/Dockerfile
index bda15d0074..a58d0da0c4 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -17,6 +17,20 @@
 # under the License.
 #
 
+FROM eclipse-temurin:17 as jre-build
+
+# Create a custom Java runtime
+RUN $JAVA_HOME/bin/jlink \
+         --add-modules ALL-MODULE-PATH \
+         --strip-debug \
+         --no-man-pages \
+         --no-header-files \
+         --compress=2 \
+         --output /javaruntime
+
+RUN echo networkaddress.cache.ttl=1 >> /javaruntime/conf/security/java.security
+RUN echo networkaddress.cache.negative.ttl=1 >> 
/javaruntime/conf/security/java.security
+
 FROM ubuntu:22.04
 MAINTAINER Apache BookKeeper <d...@bookkeeper.apache.org>
 
@@ -42,7 +56,6 @@ RUN set -x \
     && adduser "${BK_USER}" \
     && apt-get update \
     && apt-get install -y ca-certificates apt-transport-https \
-    && apt-get install -y --no-install-recommends openjdk-17-jdk \
     && apt-get install -y --no-install-recommends python3 pip \
     && ln -s /usr/bin/python3 /usr/bin/python \
     && apt-get install -y --no-install-recommends gpg gpg-agent wget sudo \
@@ -66,10 +79,9 @@ RUN set -x \
 
 WORKDIR /opt/bookkeeper
 
-ENV JAVA_HOME /usr/lib/jvm/java-17-openjdk-$TARGETARCH
-
-RUN echo networkaddress.cache.ttl=1 >> $JAVA_HOME/conf/security/java.security \
-    && echo networkaddress.cache.negative.ttl=1 >> 
$JAVA_HOME/conf/security/java.security
+ENV JAVA_HOME=/opt/java/openjdk
+ENV PATH="$PATH:$JAVA_HOME/bin"
+COPY --from=jre-build /javaruntime $JAVA_HOME
 
 COPY scripts /opt/bookkeeper/scripts
 RUN chmod +x -R /opt/bookkeeper/scripts/