# ----------------------------

# STAGE 1: Build the JAR

# ----------------------------

# Use a Maven image that comes with Java 17 pre-installed

FROM maven:3.9-eclipse-temurin-17 AS build

WORKDIR /app

# Copy pom.xml and source code

COPY pom.xml .

COPY src ./src

# Build the application

RUN mvn clean package -DskipTests

# ----------------------------

# STAGE 2: Run the App

# ----------------------------

# Use Eclipse Temurin (The new standard for OpenJDK)

FROM eclipse-temurin:17-jre-jammy

WORKDIR /app

# 🟢 Install C++ (g++) and Python (Critical for Native Execution)

RUN apt-get update && apt-get install -y \

g++ \

python3 \

&& rm -rf /var/lib/apt/lists/*

# Copy the built JAR from the previous stage

COPY --from=build /app/target/*.jar app.jar

# Expose port and run

EXPOSE 8080

ENTRYPOINT ["java", "-jar", "app.jar"]