Summary of common docker commands
Table of contents
Preface
随着云原生技术不断落地，日常运维过程中存在docker相关命令操作，本文主要介绍docker日常命令用途及使用方法。
1. Container operation
To see which containers are running
docker ps
View all containers (including stopped ones)
docker ps -a
Start, stop, restart containers
docker start|stop|restart $dockerid
into the running container
docker exec -it $dockerid /bin/bash
Export container as image
docker commit $dockerid
Delete container
docker rm $dockerid
Container status
docker stats $dockerid
Container metadata
docker inspect $dockerid
2. Container file operations
2.1 Copy the file from the host to the container
docker cp /tmp/error.log $dockerid:/tmp/
Among them, /tmp/error.log is the original file of the host machine, and $dockerid:/tmp/ is the container id: target directory
2.2 Copy the container's files from the container to the host
docker cp $dockerid:/tmp/error.log /tmp/
Among them, $dockerid:/tmp/error.log is the container id: the original file path, and /tmp/ is the host directory
3. Log operation
View container logs
docker logs $dockerid
View real-time container logs
docker logs -f $dockerid
clear log
docker logs --tail=0 $dockerid
4. Container space operation
See how much space a container is using
docker system df
How to clean everything in Docker, use this command with caution
docker system prune -a**
Only clean up dangling images
docker image prune -a
Clean up unused volumes/
docker volume prune
Clean up stopped containers
docker container prune