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Docker Cheat Sheet

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This cheatsheet provides a quick reference for common Docker commands and concepts to help you streamline your containerized workflows.

On this page
Introduction   Commands   Dockerfile Directives   Docker Compose   Docker Swarm   Tips and Tricks  

Introduction  

Docker is a powerful platform for automating the deployment, scaling, and management of applications in lightweight, portable containers. This cheatsheet provides a quick reference for common Docker commands and concepts to help you streamline your containerized workflows.

Commands  

# Command Description
1 docker --version Display Docker version
2 docker info Display system-wide information about Docker
3 docker run [options] image [command] [args] Run a command in a new container
4 docker ps List running containers
5 docker ps -a List all containers (running and stopped)
6 docker images List locally available images
7 docker pull image Download an image from a registry
8 docker build [options] path Build an image from a Dockerfile in the specified path
9 docker push image Push an image to a registry
10 docker rmi image Remove an image
11 docker rm container Remove a container
12 docker exec [options] container command Run a command in a running container
13 docker stop container Stop a running container
14 docker start container Start a stopped container
15 docker restart container Restart a running or stopped container
16 docker logs container View logs from a container
17 docker network ls List Docker networks
18 docker volume ls List Docker volumes
19 docker-compose up Start services defined in a docker-compose.yml file
20 docker-compose down Stop and remove containers, networks, and volumes
21 docker inspect [options] object Display detailed information on one or more objects
22 docker attach container Attach local standard input, output, and error streams to a running container
23 docker cp [options] source_path container:destination_path Copy files/folders between a container and the local filesystem
24 docker commit [options] container [repository[:tag]] Create a new image from a container’s changes
25 docker buildx create --use Create and use a new builder instance with BuildKit support

Dockerfile Directives  

# Directive Description
1 FROM image [AS name] Set the base image for subsequent instructions
2 COPY source_path destination_path Copy files/folders from source to destination
3 RUN command Execute a command in a new layer
4 CMD ["executable", "param1", ...] Set the default command and/or parameters
5 EXPOSE port Inform Docker that the app will listen on the specified network ports at runtime

Docker Compose  

# Command Description
1 docker-compose ps List containers defined in docker-compose.yml
2 docker-compose logs [service] View logs for a specific service in the docker-compose.yml
3 docker-compose exec service command Run a command in a service container
4 docker-compose down --volumes Stop and remove containers, networks, and volumes defined in docker-compose.yml
5 docker-compose build Build services defined in docker-compose.yml
6 docker-compose up -d Start services in the background
7 docker-compose scale service=num Scale a service to a specific number of containers
8 docker-compose pause Pause services in the docker-compose.yml
9 docker-compose unpause Unpause services in the docker-compose.yml

Docker Swarm  

# Command Description
1 docker swarm init Initialize a swarm
2 docker node ls List nodes in the swarm
3 docker service ls List services in the swarm
4 docker service ps service List tasks of a service in the swarm
5 docker service scale service=num Scale a service to a specific number of replicas
6 docker service update [options] service Update a service with new configuration
7 docker service rm service Remove a service from the swarm
8 docker swarm join-token [worker/manager] Display the join token for worker or manager nodes
9 docker swarm leave --force Force a node to leave the swarm

Tips and Tricks  

# Tip/Trick Description
1 Container Shell Access: docker exec -it container sh Access the shell inside a running container
2 Cleanup: docker system prune -a Remove all unused containers, networks, and images
3 Inspect Container IP: docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' container Get the IP address of a running container
4 View Container Resources: docker stats container Display a live stream of container resource usage
5 Docker Contexts: docker context use [context] Switch between Docker contexts
6 Interactive Build: docker build -t image:tag - < Dockerfile Build an image interactively from a Dockerfile
7 Docker Prune Images: docker image prune -a Remove all dangling and unused images
8 List Container IPs: docker inspect -f '{{.Name}} - {{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $(docker ps -aq) List container names and their IPs

This cheatsheet covers a wide range of Docker commands, Dockerfile directives, Docker Compose, Docker Swarm, and includes some useful tips and tricks. Whether you’re a beginner or an experienced Docker user, this cheatsheet aims to make your containerization workflows more efficient and productive.

On this page:
Introduction   Commands   Dockerfile Directives   Docker Compose   Docker Swarm   Tips and Tricks  
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