Docker Basics: Containerizing Your Applications

Docker has revolutionized how we deploy and run applications by providing lightweight, portable containers. Containers package an application and its dependencies together, ensuring consistent behavior across different environments. Key Docker concepts: 1. Images: Read-only templates used to create containers 2. Containers: Running instances of images 3. Dockerfile: Text file with instructions to build an image 4. Docker Hub: Registry for sharing images 5. Volumes: Persistent data storage 6. Networks: Communication between containers Basic Docker commands: - docker build -t myapp . (Build an image from a Dockerfile) - docker run myapp (Run a container from an image) - docker ps (List running containers) - docker stop (Stop a running container) Containerization offers benefits like: - Consistency across environments - Faster deployment - Better resource utilization - Easy scaling - Simplified dependency management