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Docker

Introduction​

This cheat sheet provides a quick reference for some common Docker commands and concepts. Docker is a platform for developing, shipping, and running applications in containers.

Installation​

To use Docker, you need to install it on your system. Installation methods may vary depending on your operating system. Refer to the official Docker documentation for installation instructions.

Docker Concepts​

Images​

  • Pull an image from Docker Hub:

    docker pull image_name:tag

  • List all locally available images:

    docker images

  • Remove an image:

    docker rmi image_name:tag

Containers​

  • Create and start a container from an image:

    docker run -d --name my_container image_name:tag

  • List all running containers:

    docker ps

  • List all containers (including stopped ones):

    docker ps -a

  • Stop a running container:

    docker stop container_id

  • Remove a container (must be stopped):

    docker rm container_id

Volumes​

  • Create a Docker volume:

    docker volume create my_volume

  • List Docker volumes:

    docker volume ls

  • Remove a Docker volume:

    docker volume rm my_volume

Networking​

  • List Docker networks:

    docker network ls

  • Create a custom Docker network:

    docker network create my_network

Docker Compose​

Docker Compose is a tool for defining and running multi-container Docker applications. It uses a YAML file to configure application services and environments.

Docker Compose Commands​

  • Start containers defined in a Compose file:

    docker-compose up -d

  • Stop containers defined in a Compose file:

    docker-compose down

  • List running Compose services:

    docker-compose ps

  • View logs for services:

    docker-compose logs

Dockerfile​

Dockerfile is a script that contains instructions for building a Docker image.

Building Images with Dockerfile​

  • Build an image from a Dockerfile in the current directory:

    docker build -t my_image:tag .

  • Build an image from a Dockerfile in a specific directory:

    docker build -t my_image:tag /path/to/dockerfile/dir

Conclusion​

This cheat sheet covers some basic Docker commands and concepts. Docker offers a wide range of features and functionality; refer to the Docker documentation for more in-depth information and advanced usage.