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![Creating a Dockerfile
• Example Dockerfile:
• FROM node:14
• WORKDIR /app
• COPY . .
• RUN npm install
• CMD ["node", "app.js"]](https://image.slidesharecdn.com/dockerpresentation-250306025422-c1b42996/85/Introduction-Basic-Installation-Docker-Container-8-320.jpg)
![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](https://image.slidesharecdn.com/dockerpresentation-250306025422-c1b42996/85/Introduction-Basic-Installation-Docker-Container-9-320.jpg)
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. VirtualMachines • 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 ofDocker • 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 • ForWindows/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 • Definemulti-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 simplifiesapplication deployment. • Offers portability, scalability, and efficiency. • Learn and integrate Docker in your development workflow!
- 12.