### 🐳 What is Docker? Docker is a powerful platform for automating the deployment of applications within lightweight, portable containers, making it easier to manage and scale applications. --- ### 🔧 Basic Commands | Command | Description | |-------------------------------|-----------------------------------------------------------| | `docker --version` | Check the installed Docker version | | `docker pull ` | Download an image from Docker Hub | | `docker images` | List all downloaded images | | `docker rmi ` | Remove an image | | `docker run ` | Create and start a container from an image | | `docker ps` | List all running containers | | `docker ps -a` | List all containers (running + stopped) | | `docker stop ` | Stop a running container | | `docker start ` | Start a stopped container | | `docker rm ` | Remove a stopped container | --- ### 📦 Working with Containers | Command | Description | |----------------------------------------------|-------------------------------------------------------| | `docker exec -it /bin/bash` | Access the terminal of a running container | | `docker logs ` | View logs from a container | | `docker commit ` | Create a new image from a container's changes | | `docker network ls` | List all networks | | `docker volume ls` | List all volumes | --- ### 🛠️ Dockerfile Basics - **Dockerfile Structure**: ```dockerfile # Base image FROM ubuntu:latest # Maintainer LABEL maintainer="your_name@example.com" # Install dependencies RUN apt-get update && apt-get install -y python3 # Copy files COPY . /app # Set working directory WORKDIR /app # Command to run CMD ["python3", "app.py"] ``` --- ### 🌐 Docker Compose - **docker-compose.yml Example**: ```yaml version: '3' services: web: image: nginx:latest ports: - "80:80" db: image: mysql:latest environment: MYSQL_ROOT_PASSWORD: example ``` ### 🔥 Common Commands | Command | Description | |------------------------------|-----------------------------------------------| | `docker-compose up` | Start services defined in `docker-compose.yml` | | `docker-compose down` | Stop and remove containers | | `docker-compose logs` | View logs for services | --- ### 📘 Useful Tips - **Container Management**: - Use the `-d` flag with `docker run` to run containers in detached mode for background execution. - **Clean Up**: - Run `docker system prune` to remove unused data and free up disk space. - **Help**: - Use `docker --help` for detailed command information and options. --- ### 🎨 Styling Tips - **Terminal Color**: Use terminal color codes for output to make commands visually appealing: ```bash echo -e "\033[1;32mYour command here\033[0m" ``` - **Icons**: Enhance your notes with emojis for a more engaging experience. --- ### 🔗 Resources - [Official Docker Documentation](https://docs.docker.com/) - [Docker Hub](https://hub.docker.com/) ---

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🚀 Docker Cheat sheet for Beginners

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