Docker Mastery Cheat-Sheet for DevOps Challenge

Introduction

Docker has revolutionized containerization, making it easier to develop, ship, and run applications in isolated environments. Whether you're a beginner or an experienced DevOps engineer, having a cheat sheet can be a game-changer. This guide covers essential Docker and Docker Compose commands to boost your productivity. 📌

🐳 Docker Basics

1️⃣ Container Lifecycle Commands

docker run -d --name my_container image_name → Run a container in detached mode
docker ps → List running containers
docker ps -a → List all containers
docker stop container_id → Stop a running container
docker start container_id → Start a stopped container
docker restart container_id → Restart a container
docker rm container_id → Remove a container
docker logs container_id → View container logs
docker exec -it container_id bash → Access the container shell
docker kill container_id → Force-stop a container

📦 Image Management

docker images → List available images
docker pull image_name → Download an image from Docker Hub
docker build -t my_image . → Build an image from a Dockerfile
docker tag image_id myrepo/myimage:latest → Tag an image
docker push myrepo/myimage:latest → Push an image to Docker Hub
docker rmi image_id → Remove an image

📂 Volumes & Bind Mounts

docker volume create my_volume → Create a Docker volume
docker volume ls → List all volumes
docker volume inspect my_volume → Inspect volume details
docker volume rm my_volume → Remove a volume
docker run -v my_volume:/data image_name → Attach a volume to a container
docker run -v $(pwd)/data:/container_data image_name → Use bind mount

🌐 Networking

docker network ls → List available networks
docker network create my_network → Create a new network
docker network inspect my_network → Inspect network details
docker network connect my_network container_id → Connect a container to a network
docker network disconnect my_network container_id → Disconnect a container from a network

📜 Docker Compose Commands

Docker Compose simplifies managing multi-container applications using a docker-compose.yml file.

docker-compose up -d → Start all services in detached mode
docker-compose down → Stop and remove all containers
docker-compose ps → List running services
docker-compose logs -f → View real-time logs
docker-compose build → Build services from the compose file
docker-compose restart → Restart all services
docker-compose exec service_name bash → Access a running service’s shell

🎯 Conclusion

Mastering these Docker & Docker Compose commands will help you manage containers efficiently. Bookmark this cheat sheet 📌 and share it with fellow DevOps learners!

If you found this helpful, share your thoughts in the comments. 😊💬

🚀 Let’s keep learning and building! 🔥

#DevOps #Docker #Containerization #90DaysOfDevOps

Day 20 of My 90-Day DevOps Challenge: Docker Mastery - Cheat-Sheet!