Upgrade to GraalVM for JDK 23

.github/workflows/github-actions-spring-boot-webserver.yml

@@ -14,11 +14,18 @@ jobs:
     - name: Set up GraalVM
       uses: graalvm/setup-graalvm@v1
       with:
-        java-version: '23-ea'
+        java-version: '23'
         distribution: 'graalvm'
         github-token: ${{ secrets.GITHUB_TOKEN }}
     - name: Run Spring Boot Web Server
+      # working-directory: native-image/spring-boot-webserver
       run: |
+        # Prepapre static resources
+        pwd
+        unzip native-image/spring-boot-webserver/src/main/resources/static.zip
+        cd /home/runner/work/workshops/workshops/native-image/spring-boot-webserver
+        #
+
         # Build JAR (Debian Slim)
         ./build-jar.sh
         #
@@ -59,6 +66,9 @@ jobs:
         # Compare file sizes
         ls -lh target/webserver*
         docker images webserver
+
+        # Restore defaults
+        git clean -fd static/
     - name: Archive production artifacts
       uses: actions/upload-artifact@v4
       with:

README.md

@@ -50,13 +50,13 @@ GraalVM as a Java runtime.
 <a href="https://github.com/graalvm/workshops/actions/workflows/github-actions-spring-boot-webserver.yml">
    <img alt="native-image-quickstart" src="https://github.com/graalvm/workshops/actions/workflows/github-actions-spring-boot-webserver.yml/badge.svg" /></a>
 
-> Workshop is for developers looking to understand better how to build **size-optimized** Java applications using [GraalVM Native Image](https://www.graalvm.org/reference-manual/native-image/). In the workshop you will:
-> Compile a Spring Boot web server, hosting GraalVM documentation pages, ahead of time into a native executable and optimize it for file size
-> See how to use the [GraalVM Native Image Maven Plugin](https://graalvm.github.io/native-build-tools/latest/maven-plugin.html)
-> Create native executables and run them inside different base containers, including Paketo Buildpacks
-> Shrink a container image size by taking advantage of different Native Image containerisation and linking options
+> Workshop for developers looking to understand better how to build **size-optimized** Java applications using [GraalVM Native Image](https://www.graalvm.org/reference-manual/native-image/). In the workshop you will:
+>  - Compile a Spring Boot web server, hosting GraalVM documentation pages, ahead of time into a native executable and optimize it for file size
+>  - See how to use the [GraalVM Native Image Maven Plugin](https://graalvm.github.io/native-build-tools/latest/maven-plugin.html)
+>  - Create native executables and run them inside different base containers, including Paketo Buildpacks
+>  - Shrink a container image size by taking advantage of different Native Image containerisation and linking options
 
-> Run on an Oracle-owned tenancy (Luna Labs): [https://luna.oracle.com/lab/b644a03a-8238-4293-a586-55e5b0ec6186](https://luna.oracle.com/lab/b644a03a-8238-4293-a586-55e5b0ec6186)
+> You can also run this workshop for free on Oracle Cloud Infrastructure (Luna Labs): [https://luna.oracle.com/lab/b644a03a-8238-4293-a586-55e5b0ec6186](https://luna.oracle.com/lab/b644a03a-8238-4293-a586-55e5b0ec6186)
 
 ### ![Lab Flask](./images/lab-flask.png) [Understanding Reflection with GraalVM Native Image](native-image/reflection/)
 <a href="https://github.com/graalvm/workshops/actions/workflows/github-actions-native-image-reflection.yml">

native-image/spring-boot-webserver/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,18 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.5/apache-maven-3.8.5-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar

native-image/spring-boot-webserver/Dockerfile.debian-slim.uber-jar

@@ -0,0 +1,9 @@
+FROM container-registry.oracle.com/graalvm/jdk:23 AS build
+COPY . /webserver
+WORKDIR /webserver
+RUN ./mvnw clean package
+
+FROM gcr.io/distroless/java21-debian12
+COPY --from=build /webserver/target/webserver-0.0.1-SNAPSHOT.jar webserver-0.0.1-SNAPSHOT.jar  
+EXPOSE 8080  
+ENTRYPOINT ["java", "-jar", "webserver-0.0.1-SNAPSHOT.jar"]

native-image/spring-boot-webserver/Dockerfile.distroless-base.mostly

@@ -0,0 +1,4 @@
+FROM gcr.io/distroless/base-debian12
+COPY target/webserver.mostly-static /
+EXPOSE 8080
+ENTRYPOINT ["/webserver.mostly-static"]

native-image/spring-boot-webserver/Dockerfile.distroless-java-base.dynamic

@@ -0,0 +1,4 @@
+FROM gcr.io/distroless/java-base-debian12
+COPY target/webserver /
+EXPOSE 8080
+ENTRYPOINT ["/webserver"]

native-image/spring-boot-webserver/Dockerfile.distroless-java-base.dynamic-optimized

@@ -0,0 +1,4 @@
+FROM gcr.io/distroless/java-base-debian12
+COPY target/webserver.dynamic-optimized /
+EXPOSE 8080
+ENTRYPOINT ["/webserver.dynamic-optimized"]

native-image/spring-boot-webserver/Dockerfile.distroless-java-base.jlink

@@ -0,0 +1,22 @@
+FROM container-registry.oracle.com/graalvm/jdk:23 AS build
+COPY . /webserver
+WORKDIR /webserver
+RUN ./mvnw clean package
+RUN ./mvnw dependency:build-classpath -Dmdep.outputFile=cp.txt
+RUN jdeps --ignore-missing-deps -q  --recursive --multi-release 23 --print-module-deps --class-path $(cat cp.txt) target/webserver-0.0.1-SNAPSHOT.jar
+RUN jlink \
+        --module-path ${JAVA_HOME}/jmods \
+        --add-modules java.base,java.compiler,java.desktop,java.instrument,java.management,java.naming,java.net.http,java.prefs,java.rmi,java.scripting,java.security.jgss,java.sql,jdk.jfr,jdk.unsupported,org.graalvm.nativeimage \
+        --verbose \
+        --strip-debug \
+        --compress zip-9 \
+        --no-header-files \
+        --no-man-pages \
+        --strip-java-debug-attributes \
+        --output jlink-jre
+
+FROM gcr.io/distroless/java-base-debian12
+COPY --from=build /webserver/target/webserver-0.0.1-SNAPSHOT.jar webserver-0.0.1-SNAPSHOT.jar
+COPY --from=build /webserver/jlink-jre jlink-jre
+EXPOSE 8080
+ENTRYPOINT ["jlink-jre/bin/java", "-jar", "webserver-0.0.1-SNAPSHOT.jar"]

native-image/spring-boot-webserver/Dockerfile.scratch.static

@@ -0,0 +1,5 @@
+FROM scratch
+WORKDIR /tmp
+COPY target/webserver.static /
+EXPOSE 8080
+ENTRYPOINT ["/webserver.static"]

native-image/spring-boot-webserver/Dockerfile.scratch.static-upx

@@ -0,0 +1,5 @@
+FROM scratch
+WORKDIR /tmp
+COPY target/webserver.static-upx /
+EXPOSE 8080
+ENTRYPOINT ["/webserver.static-upx"]