12-Dockerfile-tiny-jlink-distroless-java-base

FROM maven:3-eclipse-temurin-21 as build

COPY target/tiny.jar /tiny.jar

RUN jar xf /tiny.jar

RUN jdeps --ignore-missing-deps -q  \
    --recursive  \
    --multi-release 21  \
    --print-module-deps  \
    --class-path 'BOOT-INF/lib/*'  \
    tiny.jar > deps.info

RUN jlink \
    --add-modules $(cat deps.info) \
    --strip-debug \
    --compress 2 \
    --no-header-files \
    --no-man-pages \
    --output /myjre

FROM gcr.io/distroless/java-base

COPY --from=build /myjre /myjre

COPY --from=build /tiny.jar /tiny.jar

ENTRYPOINT ["/myjre/bin/java", "-jar", "tiny.jar"]