Dockerfile

# Multi-stage build for Java Spring Boot application
FROM eclipse-temurin:25-jdk AS builder

# Install Maven
RUN apt-get update && apt-get install -y maven && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Copy pom.xml
COPY pom.xml .

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

# Copy source code
COPY src src

# Build the application
RUN mvn clean package -DskipTests -B

# Production stage
FROM eclipse-temurin:25-jre

# Set working directory
WORKDIR /app

# Create non-root user for security
RUN groupadd -r appuser && useradd -r -g appuser appuser

# Copy the built JAR from builder stage
COPY --from=builder /app/target/open-meteo-mcp-*.jar app.jar

# Change ownership of the app directory to appuser
RUN chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

# Expose the port the app runs on
EXPOSE 8080

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD curl -f http://localhost:8080/actuator/health || exit 1

# Run the application
ENTRYPOINT ["java", "-jar", "app.jar"]