DockerfileNative.Multistage

# First stage: JDK with GraalVM
FROM container-registry.oracle.com/graalvm/native-image:25 AS build

# Update package lists and Install Maven
RUN microdnf install -y maven
RUN microdnf clean all

#ENV GRAALVM_HOME="$JAVA_HOME"
WORKDIR /usr/src/app

# Copy pom.xml and download dependencies
COPY pom.xml .

RUN mvn -Pnative dependency:go-offline

COPY src src

RUN mvn package
RUN mvn -PnativeTest test
RUN mvn -Pnative -DskipTests clean native:compile

## Second stage: Lightweight image
FROM alpine:latest

# prepare to run glibc programs
RUN apk add gcompat

# Create non-root user
RUN apk add --no-cache shadow && \
    groupadd -g 1000 appuser && \
    useradd -u 1000 -g 1000 -m appuser && \
    mkdir -p /app && \
    chown -R appuser:appuser /app

WORKDIR /app

# Copy the native binary from the build stage
COPY --from=build --chown=appuser:appuser /usr/src/app/target/k8s-demo-app /app/k8s-demo-app

USER appuser
EXPOSE 8080/tcp
ENTRYPOINT ["/app/k8s-demo-app"]