docker

docker images

docker run -i -t docker_name:version
docker run -it -name li docker_name:version   # give it a name

# list containers
docker ps

# go back to a running image
docker attach name(or ID)

# stop a container
docker stop name
docker containter stop name

# rm a image
docker rmi -f name

# docker file
# docker file, -> build an image, run to get a container
FROM command: get image from dockerhub
COPY command: in docker file, we can copy file from local folder to image folder 

#build based on docker file, at current folder
# build image
docker build -t name .   # current folder
docker build -t name -f docker_file
docker build -t hello-world .

# use volume, amount a local directory to container
docker run -v local-folder-path:/var/www/html/ image_name

# list all recent runs
docker ps -a

docker diff run_id  # check the difference

# commit change to a image
# take a snap shot of the current version
docker commit run_id new_name   


# docker image sharing, push or share docker image
hub.docker.com

# systemctl command, edit at /etc/systemd
sudo systemctl start docker
# or run as server
sudo service docker start
systemctl status docker
systemctl stop docker

# remove all stopped containers, all unused networks, all dangling images and build caches.
docker system prune -f

# auto clean each time
docker run --rm