Dive into a comprehensive 15-hour course on DevOps practices using Docker and Node.js, with integration of MongoDB and Redis. Build a simple Express.js app, create custom Docker images, and master Docker networking and port forwarding. Explore Dockerignore files, bind mounts, volumes, and environment variables. Learn Docker Compose for streamlined development and production workflows. Set up MongoDB and Redis containers, implement CRUD operations, and develop user authentication with Express sessions. Configure NGINX for load balancing and understand CORS. Deploy your application to a production Ubuntu server on Digital Ocean, set up Git, and manage environment variables. Discover Docker Hub workflows, implement Watchtower for automatic updates, and delve into Docker Swarm basics for orchestration. Gain insights on session hijacking prevention and get introduced to the MERN stack with Redux Toolkit.