Installation & First Steps

#Installation & First Steps

After this lesson you'll know:

• how to install Docker
• the most important docker commands
• how to start, stop, and delete containers

#Linux

curl -fsSL https://get.docker.com | sh
sudo usermod -aG docker $USER
# Log out and back in

#macOS / Windows

Download Docker Desktop: https://docs.docker.com/desktop/

On Windows: install WSL2 first.

#Your Workflow

# Download image (without starting)
docker pull alpine

# Start a container
docker run alpine echo "Hello Docker"

# Interactive shell
docker run -it alpine sh

# Run in the background
docker run -d --name my-nginx -p 8080:80 nginx

# View logs
docker logs my-nginx

# Stop & Remove
docker stop my-nginx
docker rm my-nginx

#Essential flags

#✋ Try it out

• docker run -it --rm alpine sh — start an Alpine shell, try apk add curl and curl google.com
• docker run -d --name web -p 8080:80 nginx — visit http://localhost:8080
• docker stop web && docker rm web — clean up

#📌 Summary

• docker pull downloads images, docker run starts containers
• -d for background, -it for interactive, -p for ports
• Stop containers with docker stop, remove with docker rm