# Stage 1: Build stage
FROM maven:3.9-eclipse-temurin-21 AS build

# Set the working directory inside the container
WORKDIR /app

# Copy the pom.xml and dependencies (helps in caching dependencies)
COPY pom.xml .

# Download dependencies (this will cache dependencies in the Docker layer)
RUN mvn dependency:go-offline

# Copy the rest of the application source code
COPY src ./src

# Build the Spring Boot app
RUN mvn clean package

# Stage 2: Run stage
FROM eclipse-temurin:21-jdk AS runtime

# Copy the built JAR file from the build stage
COPY --from=build /app/target/*.jar /app/app.jar

# Expose the default Spring Boot port
EXPOSE 8080

# Command to run the Spring Boot application
ENTRYPOINT ["java", "-jar", "/app/app.jar"]