NL Analytics MCP Server for Apache Druid

# Multi-stage build for Spring Boot application # Stage 1: deps - download and cache Maven dependencies FROM maven:3-eclipse-temurin-25 AS deps # Set working directory WORKDIR /app # Copy only pom to cache dependencies layer COPY pom.xml ./ # Download dependencies into the image-local maven repository RUN mvn -B dependency:go-offline -Dmaven.repo.local=/root/.m2/repository # Stage 2: build - compile the application using cached deps FROM maven:3-eclipse-temurin-25 AS build # Set working directory WORKDIR /app # Reuse the cached maven repository from deps stage COPY --from=deps /root/.m2 /root/.m2 # Copy source code and build the application COPY src ./src COPY pom.xml ./ RUN mvn clean package -Dmaven.repo.local=/root/.m2/repository # Stage 3: Runtime stage FROM eclipse-temurin:25-jre # Add MCP server metadata labels LABEL io.modelcontextprotocol.server.name="com.iunera/druid-mcp-server" LABEL io.modelcontextprotocol.server.description="A comprehensive Model Context Protocol (MCP) server for Apache Druid that provides AI-assisted tools, resources, and prompts for managing and analyzing Druid clusters. Built with Spring Boot and Spring AI, this server enables seamless integration between Large Language Models and Apache Druid through standardized MCP protocol, offering extensive data management, ingestion control, monitoring capabilities, and automated cluster operations for modern data analytics workflows. Developed by iunera (https://www.iunera.com)." LABEL org.opencontainers.image.source="https://github.com/iunera/druid-mcp-server" LABEL org.opencontainers.image.description="MCP server providing tools for Apache Druid cluster management, monitoring, and data querying" LABEL org.opencontainers.image.vendor="iunera" # Set working directory WORKDIR /app # Install curl for health check RUN apt-get update && apt-get install -y netcat-openbsd && rm -rf /var/lib/apt/lists/* # Create user and group with id 1000 RUN groupadd -g 1000 appgroup 2>/dev/null || true && \ useradd -u 1000 -g 1000 -m -s /bin/bash appuser 2>/dev/null || true && \ chown -R 1000:1000 /app # Switch to the new user USER 1000 # Copy the built JAR from build stage COPY --from=build /app/target/druid-mcp-server-*.jar app.jar # Expose port EXPOSE 8080 # Health check HEALTHCHECK --interval=30s --timeout=3s --start-period=60s --retries=3 \ CMD nc -z localhost 8080 || exit 1 # Run the application ENTRYPOINT ["java", "-jar", "app.jar"]