# Build stage
FROM maven:3.9-eclipse-temurin-21-alpine AS build
WORKDIR /app

# Copy Maven files first for better layer caching
COPY pom.xml .
COPY .mvn .mvn
COPY mvnw .

# Download dependencies (cached layer)
RUN mvn dependency:go-offline -B

# Copy source code and build
COPY src ./src
RUN mvn clean package -DskipTests

# Runtime stage
FROM eclipse-temurin:21-jre-alpine
WORKDIR /app

# Create non-root user (required by Hugging Face Spaces)
RUN adduser -D -u 1000 appuser

# Copy the built jar
COPY --from=build --chown=appuser:appuser /app/target/*.jar app.jar

# Switch to non-root user
USER appuser

# Hugging Face Spaces requires port 7860
EXPOSE 7860

# Run the application with optimized JVM settings for containers
ENTRYPOINT ["java", "-XX:+UseContainerSupport", "-XX:MaxRAMPercentage=75.0", "-jar", "app.jar"]