# The image every Kubernetes experiment runs: the layered, distroless variant recommended in the
# Docker article (spring-boot-demo/docker-images). No shell - which matters for preStop hooks.
FROM eclipse-temurin:25-jre AS builder
WORKDIR /builder
COPY target/app.jar application.jar
RUN java -Djarmode=tools -jar application.jar extract --layers --destination extracted

FROM gcr.io/distroless/java25-debian13:nonroot
WORKDIR /application
COPY --from=builder /builder/extracted/dependencies/ ./
COPY --from=builder /builder/extracted/spring-boot-loader/ ./
COPY --from=builder /builder/extracted/snapshot-dependencies/ ./
COPY --from=builder /builder/extracted/application/ ./
ENTRYPOINT ["java", "-jar", "application.jar"]