Docker on Ubuntu

Learn to install Docker, build containers, and manage workloads on Ubuntu servers.

Getting Started with Docker

1. Install Docker with sudo apt install docker.io
2. Run the test container docker run hello-world
3. Build an image and tag it docker build -t myapp
4. Run your app docker run myapp

Managing Docker

Docker CLI basics: docker images, docker ps, docker stop
Use docker-compose to manage multiple services yml configuration
Save and load images docker save and docker load
Push to Docker Hub docker login and docker push

Troubleshooting Docker

Container won't start

Try inspecting logs: docker logs to understand startup failures

Image not found

Ensure you're using correct image tags docker pull before running

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