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NP-DK01: Build Image for a NodeJS App

Project Overview

Build and optimize a container image for a Node.js/Express.js frontend service, implementing Docker best practices and security measures.

Service Details​

Service Configuration
{
  path: "/frontend",
  runtime: "Node.js",
  framework: "Express.js",
  port: 3000,
  build: "npm install",
  launch: "node app.js"
}

Technical Requirements​

Prerequisites​

  • Docker installed locally
  • Git for version control
  • Basic Node.js understanding
  • IDE or text editor
  • GitHub account
Base Repository

https://github.com/craftista/craftista

Implementation Requirements​

🔒 Security Measures​

  • Run application as non-root user
  • Implement principle of least privilege
  • Use minimal base image
  • Remove unnecessary build tools

⚡ Optimization Requirements​

  • Optimize layer caching
  • Minimize final image size
  • Implement proper layer ordering
  • Handle dependency caching effectively

🛠 Configuration​

  • Expose port 3000
  • Set appropriate environment variables
  • Configure health check
  • Define volume mounts if needed
Important Considerations
  • Consider development vs production environments
  • Implement proper error handling
  • Include meaningful documentation
  • Follow security best practices

Community Learning​

Weekly Schedule​

  • Monday: New project release
  • Thursday: Live Build Session on [YouTube Channel Link]
    • Real-time containerization
    • Best practices discussion
    • Interactive Q&A

Share Your Work​

Join the learning community on r/devopsbuilders:

  • Use "Devops Buildcamp" flair
  • Include PR-DK01 in post title
  • Share your GitHub repository
  • Discuss your approach
  • Engage with peers
Remember

This is a community learning initiative - there's no formal evaluation, just peer learning and knowledge sharing!

Reference Commands​

Build & Run Commands
# Build the application
npm install

# Launch the application
node app.js

# Default port
3000

Best Practices Implementation Guide​

Multi-Stage Build Pattern​

Example Multi-Stage Structure
# Build stage
FROM node:18 AS builder
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .

# Production stage
FROM node:18-slim
WORKDIR /app
COPY --from=builder /app ./
USER node
CMD ["node", "app.js"]
Pro Tip

Remember to optimize your Dockerfile for the development environment while maintaining security best practices!