dockerfile-pro

Dockerfile

@@ -1,4 +1,32 @@
-FROM openjdk:17.0.2-jdk-slim-buster
-ARG JAR_FILE=target/*.jar
-COPY ${JAR_FILE} app.jar
-ENTRYPOINT ["java","-jar","/app.jar"]
+FROM eclipse-temurin:17 as app-build
+
+ENV RELEASE=17
+
+WORKDIR /opt/build
+
+COPY ./target/spring-boot-*.jar ./application.jar
+
+RUN java -Djarmode=layertools -jar application.jar extract
+RUN $JAVA_HOME/bin/jlink \
+         --add-modules `jdeps --ignore-missing-deps -q -recursive --multi-release ${RELEASE} --print-module-deps -cp 'dependencies/BOOT-INF/lib/*' 'snapshot-dependencies/BOOT-INF/lib/' application.jar` \
+         --strip-debug \
+         --no-man-pages \
+         --no-header-files \
+         --compress=2 \
+         --output ./custom-jdk
+
+FROM alpine:latest
+
+ARG BUILD_PATH=/opt/build
+ENV JAVA_HOME=/opt/jdk
+ENV PATH "${JAVA_HOME}/bin:${PATH}"
+
+WORKDIR application
+
+COPY --from=app-build $BUILD_PATH/custom-jdk $JAVA_HOME
+COPY --from=app-build $BUILD_PATH/spring-boot-loader/ ./
+COPY --from=app-build $BUILD_PATH/dependencies/ ./
+COPY --from=app-build $BUILD_PATH/snapshot-dependencies/ ./
+COPY --from=app-build $BUILD_PATH/application/ ./
+
+ENTRYPOINT ["java", "org.springframework.boot.loader.JarLauncher"]