Diagram Bridge MCP Server

# Build stage FROM node:18-alpine AS builder # Set working directory WORKDIR /app # Copy package files COPY package*.json ./ # Install ALL dependencies (including devDependencies for TypeScript build) RUN npm ci # Copy source code COPY . . # Build the application RUN npm run build # Production stage FROM node:18-alpine AS production # Install curl for health checks RUN apk add --no-cache curl # Create non-root user for security RUN addgroup -g 1001 -S nodejs && \ adduser -S mcp -u 1001 # Set working directory WORKDIR /app # Copy package files COPY package*.json ./ # Install only production dependencies RUN npm ci --only=production && npm cache clean --force # Copy built application from builder stage COPY --from=builder /app/dist ./dist # Copy any additional files needed at runtime COPY --from=builder /app/LICENSE ./ # Change ownership to non-root user RUN chown -R mcp:nodejs /app # Switch to non-root user USER mcp # Environment variables with defaults ENV NODE_ENV=production ENV PORT=3000 ENV DOCKER_CONTAINER=true ENV KROKI_URL=http://kroki:8000 ENV KROKI_TIMEOUT=30000 ENV KROKI_MAX_RETRIES=3 ENV KROKI_USE_LOCAL=true ENV LOG_LEVEL=info ENV MAX_CODE_LENGTH=5242880 # Expose port (dynamically based on PORT env var, default 3000) EXPOSE ${PORT:-3000} # Health check - now uses HTTP endpoint when in container HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \ CMD curl -f http://localhost:${PORT:-3000}/health || exit 1 # Start the application CMD ["node", "dist/index.js"]