Docker Deep Dive: Docker Commands

docker --help | more

docker container -h

docker images -h

docker images ls -h

docker image pull $image_name

docker image inspect $image_id

-P : is for port mapping, -d : is to run container in the background

docker container run -P -d nginx

docker container inspect $container_id

docker container top $container_id

docker container stop $container_id

docker container start $container_id

docker container pause $container_id

docker container unpause $container_id

docker container logs $container_id

stats - Display a live stream of container(s) resource usage statistics

$ docker container stats 1017ff810803
CONTAINER ID        NAME                CPU %               MEM USAGE / LIMIT     MEM %               NET I/O             BLOCK I/O           PIDS
1017ff810803        loving_brattain     0.00%               2.574MiB / 15.41GiB   0.02%               11.2kB / 1.27kB     279kB / 0B          2

docker container exec -it $container_id ls /bin/bash

Remove all stopped containers

docker container prune
docker container prune -f 

____________________ Important ____________________

• attach vs exec - https://stackoverflow.com/questions/30960686/difference-between-docker-attach-and-docker-exec
• cmd vs entrypoint - https://stackoverflow.com/questions/21553353/what-is-the-difference-between-cmd-and-entrypoint-in-a-dockerfile
• How to detach - https://stackoverflow.com/questions/25267372/correct-way-to-detach-from-a-container-without-stopping-it
• run application in foreground - https://stackoverflow.com/questions/18861300/how-to-run-nginx-within-a-docker-container-without-halting
• STOPSIGNAL - https://stackoverflow.com/questions/50898134/what-does-docker-stopsignal-do