Dockerfile

FROM amazoncorretto:21-alpine3.18-jdk AS builder
WORKDIR /application
COPY . .
RUN --mount=type=cache,target=/root/.m2 chmod +x mvnw && ./mvnw clean install -Dmaven.test.skip

FROM amazoncorretto:21-alpine3.18 AS layers
WORKDIR /application
COPY --from=builder /application/target/*.jar app.jar
RUN java -Djarmode=layertools -jar app.jar extract

FROM amazoncorretto:21-alpine3.18
VOLUME /tmp
RUN adduser -S spring-user
USER spring-user
COPY --from=layers /application/dependencies/ ./
COPY --from=layers /application/spring-boot-loader/ ./
COPY --from=layers /application/snapshot-dependencies/ ./
COPY --from=layers /application/application/ ./

ENV JAVA_ERROR_FILE_OPTS="-XX:ErrorFile=/tmp/java_error.log"
ENV JAVA_HEAP_DUMP_OPTS="-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/tmp"
ENV JAVA_ON_OUT_OF_MEMORY_OPTS="-XX:+ExitOnOutOfMemoryError"
ENV JAVA_NATIVE_MEMORY_TRACKING_OPTS="-XX:NativeMemoryTracking=summary -XX:+UnlockDiagnosticVMOptions -XX:+PrintNMTStatistics"

ENTRYPOINT java \
    $JAVA_HEAP_DUMP_OPTS \
    $JAVA_ON_OUT_OF_MEMORY_OPTS \
    $JAVA_ERROR_FILE_OPTS \
    $JAVA_NATIVE_MEMORY_TRACKING_OPTS \
    org.springframework.boot.loader.launch.JarLauncher