Dockerfile-8

FROM maven:3.9.4-eclipse-temurin-17 AS build
WORKDIR /app
COPY . .
RUN mvn clean package -DskipTests

# Extract the JAR layers
RUN mkdir -p /app/layers
WORKDIR /app/layers
RUN java -Djarmode=layertools -jar /app/target/docker-spring-boot-optimization-tutorial-0.0.1-SNAPSHOT.jar extract

FROM eclipse-temurin:17-jre-alpine AS run
RUN addgroup --system appgroup && adduser --system appuser
WORKDIR /app

# Extract the JAR layers
RUN mkdir -p /app/layers
WORKDIR /app/layers

# Assigning Permissions need to be done before jumping into normal user
COPY entrypoint.sh /entrypoint2.sh
RUN chmod +x /entrypoint2.sh
RUN chown -R appuser:appgroup /app

USER appuser
COPY --from=build /app/target/docker-spring-boot-optimization-tutorial-0.0.1-SNAPSHOT.jar app.jar

# Copy extracted layers separately
COPY --from=build /app/layers/dependencies/ ./dependencies/
COPY --from=build /app/layers/spring-boot-loader/ ./spring-boot-loader/
COPY --from=build /app/layers/snapshot-dependencies/ ./snapshot-dependencies/
COPY --from=build /app/layers/application/ ./application/

STOPSIGNAL SIGTERM
EXPOSE 8080
ENV JAVA_OPTS="-XX:+UseSerialGC"
ENV JAVA_CONTAINER="-XX:+UseContainerSupport -XX:MaxRAMPercentage=75 -XX:InitialRAMPercentage=50 -XX:MinRAMPercentage=50"

ENTRYPOINT ["/entrypoint2.sh"]