milosh86 / docker-tips

useful docker tips

Docker Tips

create image and skip cache

docker build -f docker/Dockerfile123 -t my-image-name --no-cache .

list images

docker images

list all containers

docker ps -a

see containers's output (logs)

docker logs <container_name_or_id>

attach to docker container

 - check container id of running container: docker ps
 - docker exec -it <container_id> /bin/bash

remove all images exept img1, img2 and img3:

docker rmi $(docker images | grep -v 'IMAGE\|img1\|img2\|img3' | awk {'print $3'})

remove all containers exept c1, c2 and c3:

docker rm -f $(docker ps -a | grep -v 'CONTAINER\|c1\|c2\|c3' | awk {'print $1'})

create isolated network:

docker network create --driver bridge isolated_nw

run container:

docker run -d \
   --network=isolated_nw \
   --name=demo-app \
   -p 8000:8000 \
   -e "MONGO_URL=mongodb://mongo/V5-TEST" \
   demo-app

* --name - container name
* -p - port mapping
* -e - ENV
* demo-app - image name

copy file from container to host machine

docker cp container-name:/path/to/file /local/path

copy file from host machine to container

docker cp /local/path/to/file container-name:/path/to/file

cleanup space consumed by unused Docker images, containers, volumes

docker rm $(docker ps -q -f 'status=exited')
docker rmi $(docker images -q -f "dangling=true")
docker volume rm $(docker volume ls -qf dangling=true)

show containers stats (with container names instead of IDs)

docker stats $(docker ps --format={{.Names}})