Docker Cheetsheet

Creating and Running container from a Image

Command : docker run

docker run hello-world

Override default command

Command : docker run command

docker run busybox echo hi there docker run busybox ls

Listing Running Containers

Command : docker ps

docker run busybox ping docker ps docker ps --all //List all containers ever created

Docker Lifecycle

Command docker run

docker create <image name> docker start <container id> docker start -a <container id> -a to display the console log

Docker Restaring

Command : docker ps –all

docker start -a <container id from ps command>

Removing Stopped Containers

Command : docker system prune

Retrieving Log outputs

Command : docker logs // if you have not started using docker start -a

Stopping Containers

Command : docker stop – SIGTERM (die gracefully) – Listen to Stop command in code – 10 Seconds to Shutdown – After 10 seconds its KILL

docker kill <container id> - SIGKILL - Die immediately

Multi Command Containers – Execute a second command inside a runinng container

Command : docker run redis

docker exec -it <container id> <command> // -it enter using keyborad and send it to container dcoker exec -it <id> redis-cli

Using docker -it flag

Command : docker exec -i redis-cli

docker exec -t <container id> redis-cli

Getting Command Prompt in Running Container

Command : docker exec -it sh – CTRL C or CTRL D to exit or type exit

Starting a Shell using docker run

Command : docker run -it busybox sh – Start and run sh and attached to STDIN and STDOUT

Building docker images

Command : docker build . (where Docker file is present) – Returns the image id of docker then use docker run

Tagging Docker image

Command : docker build -t /:latest .

Mannual Image Creation

Command : docker run -it apline sh

apk add --update redis New Terminal docker ps docker committ -c 'CMD ["redis-server"]' <container id> docker run <container id>

Port Forwarding

Command : docker run -p 8080:8080 /

Docker Building using Custom File Name

Command : docker build -f .

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: