Docker 기초

Docker Commands

• Building an image

docker image build -t example/echo:latest .

 

• Running an image (background)

docker container run -d example/echo:latest

 

• List of images running

docker container ls

 

• Stop image
  • --filter option was used to print the containers that match the condition
  • -q option was used to print the id only

docker container stop $(docker container ls --filter "ancestor=example/echo" -q)

 

• Running an image on the background with port forwarding

docker container run -d -p 9000:8080 example/echo:latest

 

• Host port can be omitted
  • Then some open port will be automatically mapped
  • Can check mapped port with docker container ls

docker container run -d -p 8080 example/echo:latest

 

• Using tags on image

docker image tag example/echo:latest example/echo:0.1.0
docker image ls

 

• Giving names to container
  • Use the --name option
  • Then you can stop the container with name

docker container run -t -d --name echo example/echo:latest
docker container stop echo

 

• Restarting a stopped container
  • Can use name or container id

docker container restart echo

 

• Removing a container
  • Can use name or container id

docker container rm echo

 

• Remove all exited container

docker container rm $(docker container ls --filter "status=exited" -q)

 

• Checking stdout of some container
  • Can use name or container id
  • Can be used for debugging

docker container logs -f echo

 

• Executing commands in a container

docker container exec echo [command]

 

• Using a terminal (as if connected to ssh)

docker container exec -it [name or id] sh

 

• Copy files between container and host
  • Can be used to move files created during execution and check them (usually for debugging purposes)

docker container cp [options] [container id/name]:[original file] [target file]
docker container cp [options] [host original file] [container id/name]:[target file]