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Docker #2023 Cheat Sheet

#docker #cheatsheet #tutorial

Hello Coders!

A Docker Cheat Sheet provides a quick reference guide for common Docker commands and concepts.

For newcomers, Docker is a containerization platform that allows you to package and distribute applications along with their dependencies in containers.

Here's a Docker cheat sheet with commonly used commands and concepts:

✅ Docker Commands

Pull an Image

Download a Docker image from a registry (e.g., Docker Hub).

$ docker pull image_name:tag
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List Images

View a list of locally available Docker images.

$ docker images
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Run a Container

Start a new container from an image.

$ docker run image_name:tag
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  • Add -d to run in detached mode.
  • Use --name to specify a custom container name.
  • Use -p to map ports (e.g., -p host_port:container_port).

List Containers

View a list of running containers.

$ docker ps
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  • Add -a to see all containers, including stopped ones.

Stop a Container

Stop a running container gracefully.

$ docker stop container_id
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Remove a Container

Delete a stopped container.

$ docker rm container_id
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Remove an Image

Delete a Docker image.

$ docker rmi image_name:tag
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Inspect Container

View detailed information about a container.

$ docker inspect container_id
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✅ Docker Compose

Docker Compose is a tool for defining and running multi-container Docker applications.

Create and Start Services

Start containers defined in a docker-compose.yml file.

$ docker-compose up
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  • Add -d to run in detached mode.

Stop Services

Stop containers defined in a docker-compose.yml file.

$ docker-compose down
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List Services

View a list of services defined in the docker-compose.yml file.

$ docker-compose ps
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✅ Docker Volumes

Docker volumes are used to persist data between container runs.

Create a Volume

Create a named volume.

$ docker volume create volume_name
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List Volumes

View a list of available volumes.

$ docker volume ls
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Attach a Volume to a Container

Mount a volume to a container.

$ docker run -v volume_name:/container_mount_point image_name
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✅ Docker Networks

Docker networks allow containers to communicate with each other.

Create a Network

Create a custom network.

$ docker network create network_name
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List Networks

View a list of available networks.

$ docker network ls
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Attach a Container to a Network

Connect a container to a custom network.

$ docker network connect network_name container_name
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✅ Dockerfile

A Dockerfile is a script used to create a Docker image.

Create a Dockerfile

Create a Dockerfile in your project directory.

# Example Dockerfile
FROM base_image:tag
RUN command_to_run
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Build an Image

Build a Docker image using a Dockerfile.

$ docker build -t image_name:tag .
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✅ Additional Docker Commands

Logs

View container logs.

$ docker logs container_id
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Exec

Run a command in a running container.

$ docker exec -it container_id command
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Prune

Remove stopped containers, unused networks, and dangling images.

$ docker system prune
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Login to a Registry

Log in to a Docker image registry (e.g., Docker Hub).

$ docker login
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✅ Docker Templates

This section contains a few open-source starters that include production-ready Docker setups:

👉 Django Bootstrap 5 Volt

Free starter built on top of Bootstrap 5 and Django with Database, DB Tools, OAuth via Github and Docker Support.

Django Bootstrap 5 Volt - Open-source Starter with Docker Support.

👉 Django Modernize

Open-Source Seed Project crafted on top of Modernize Bootstrap 5 and Django.

The product comes with session-based authentication, DB tools, and Docker support.

Django Modernize - Open-source Starter with Docker Support.

✅ In Summary

This cheat sheet provides a quick reference for common Docker commands and concepts.

Docker has many more features and options, so be sure to consult the official Docker documentation for more detailed information: https://docs.docker.com/

✅ Resources

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