Introduction: Basic Installation Docker Container

Introduction: Basic Installation Docker Container

1. Introduction to Docker What is Docker? A platform for developing, shipping, and running applications in containers. Provides a lightweight alternative to virtual machines.

2. Why Use Docker? Consistency across environments (development, testing, production). Faster deployment and scalability. Isolation of applications. Efficient resource utilization.

3. Docker vs. Virtual Machines Docker Containers vs. Virtual Machines: - Isolation: Process-level vs. Full OS-level. - Boot Time: Seconds vs. Minutes. - Performance: Lightweight vs. Heavy. - Storage Usage: Minimal vs. Large.

4. Key Components of Docker Docker Engine: Core service that runs containers. Docker Image: A template for creating containers. Docker Container: A running instance of an image. Docker Hub: A repository for storing and sharing images.

5. Docker Architecture Client: Sends commands to Docker daemon. Docker Daemon: Runs on the host system and manages containers. Docker Registry: Stores and distributes images. Containers: Run applications in isolated environments.

6. Installing Docker For Windows/macOS: - Download from docker.com. - Install and run Docker Desktop. For Linux: sudo apt update sudo apt install docker-ce docker-ce-cli containerd.io

7. Basic Docker Commands Check Docker version: docker --version Run a container: docker run hello-world List running containers: docker ps Stop a container: docker stop <container_id>

8. Creating a Dockerfile Example Dockerfile: FROM node:14 WORKDIR /app COPY . . RUN npm install CMD ["node", "app.js"]

9. Docker Compose Define multi-container applications. Example docker-compose.yml: version: '3' services: web: image: nginx ports: ["8080:80"] Start services: docker-compose up -d

10. Docker in Production Use orchestration tools like Kubernetes. Monitor containers using Prometheus and Grafana. Secure images and manage secrets effectively.

11. Summary Docker simplifies application deployment. Offers portability, scalability, and efficiency. Learn and integrate Docker in your development workflow!

12. Q&A Any questions?