Contents

Introduction

Docker is a powerful tool for building, shipping, and running applications within containers. Here are some essential Docker CLI commands to help you navigate Docker efficiently.

These topics will be add in the future:

  • Docker: What is it?
  • Docker Evolution: A Brief History
  • Virtualization vs. Containerization
  • Understanding Containers and Images
  • Docker File Hierarchy
  • Docker Volume
  • Docker Swarm
  • Docker Mount and Bind Mount
  • Docker Plugin and Network Driver
  • STDIN, STDOUT, STDERR
  • Why should I use Docker?

Getting Started

Check Docker Version

docker version

Docker Information

docker info

View Logs

docker logs

Docker Management Commands Cleanup

docker [Management CMD] prune

Creating and Running Containers

Searching for a Specific Image

docker search [image_name]

Run an Interactive Container

docker run -it [image_name]
  • ("i" means run interactively, and "t" tells Docker to run a shell within the container.)

Assign a Custom Name to a Container

docker run --name [custom_name] [image_name]

Execute a Command in a Running Container

docker exec -it [container_ID] [command]

Start/Stop/Restart Container

docker start -ai [container_ID]
docker stop [container_ID]
docker restart [container_ID]

Download Specific Docker Version

docker run [redis:5]

Automatically Remove Container After Execution

docker run --rm [image_name]

Run Container in Detached Mode

docker run -d [image_name]

Copy Docker

docker image tag [existing_image_tag] [new_image_name]

List Images

docker images

Managing Images and Containers

Delete Untagged Images

docker rmi $(docker images -f "dangling=true" -q)

Delete All Containers

docker rm -v -f $(docker ps -qa)

List All Containers

docker container ls -a

List Historical Containers

docker ps
docker ps --all
  • The container's ID
  • What command is the container running
  • When was the container created
  • How long has the container been running
  • What ports are mapped
  • The name of the container

Create a Volume

docker volume create [NAME]

Inspect Volume Details

docker volume inspect [NAME]

Use Volume

docker container run -it -v [NAME]:/[DIR] [IMAGE] [CMD]

List Volumes

docker volume ls

Rename Container

docker container rename [container_name/ID] [new_name]

General Container Information

docker inspect [container_ID]

View Container Memory/CPU Usage

docker stats

Limit Memory/CPU Usage

docker container run --memory=[MB]m/g --memory-swap=[MB]m/g --cpus=[usage_cpu_core_num] --cpuset-cpus=[which_cpu_core_nums] [image_name]

Set Environment Variables

docker container run --env VAR1=[Name] VAR2=[Name] [image_name]
docker container run --env-file [env.list] [image_name]

Show Running Processes

docker top [container_ID]

Copy Files to/from Container

docker cp [file_name] [container_ID]:/[destination_path]
docker cp [container]:[src-path] [local-dest-path]