# Use official OpenJDK 17 runtime as base image
FROM openjdk:17-jdk-slim

# Set working directory
WORKDIR /app

# Copy Maven wrapper and pom.xml first for better layer caching
COPY .mvn/ .mvn/
COPY mvnw pom.xml ./

# Download dependencies (this layer will be cached unless pom.xml changes)
RUN ./mvnw dependency:go-offline -B

# Copy source code
COPY src ./src

# Build the application
RUN ./mvnw clean package -DskipTests

# Expose port 8080
EXPOSE 8080

# Run the jar file
CMD ["java", "-jar", "target/chat-0.0.1-SNAPSHOT.jar"]