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Computer Science/Web

Docker 기초

by zxcvber 2020. 2. 27.

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]

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