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Dockerのコマンドには新旧ふたつの体系があるらしい

四ツ山伊吹四ツ山伊吹
四ツ山伊吹四ツ山伊吹

このリファレンスでは渾然一体としていてかえって混乱を深めている気がしないでも無い。

四ツ山伊吹四ツ山伊吹

image サブコマンド

$ docker image --help            

Usage:  docker image COMMAND

Manage images

Commands:
  build       Build an image from a Dockerfile
  history     Show the history of an image
  import      Import the contents from a tarball to create a filesystem image
  inspect     Display detailed information on one or more images
  load        Load an image from a tar archive or STDIN
  ls          List images
  prune       Remove unused images
  pull        Pull an image or a repository from a registry
  push        Push an image or a repository to a registry
  rm          Remove one or more images
  save        Save one or more images to a tar archive (streamed to STDOUT by default)
  tag         Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE

Run 'docker image COMMAND --help' for more information on a command.
四ツ山伊吹四ツ山伊吹

Manage images” とあるとおり、Docker imageを操作対象としたコマンド。Dockerfile をビルドするときもこのサブコマンドが起点となるよう。

四ツ山伊吹四ツ山伊吹

container サブコマンド

$ docker container --help                     

Usage:  docker container COMMAND

Manage containers

Commands:
  attach      Attach local standard input, output, and error streams to a running container
  commit      Create a new image from a container's changes
  cp          Copy files/folders between a container and the local filesystem
  create      Create a new container
  diff        Inspect changes to files or directories on a container's filesystem
  exec        Run a command in a running container
  export      Export a container's filesystem as a tar archive
  inspect     Display detailed information on one or more containers
  kill        Kill one or more running containers
  logs        Fetch the logs of a container
  ls          List containers
  pause       Pause all processes within one or more containers
  port        List port mappings or a specific mapping for the container
  prune       Remove all stopped containers
  rename      Rename a container
  restart     Restart one or more containers
  rm          Remove one or more containers
  run         Run a command in a new container
  start       Start one or more stopped containers
  stats       Display a live stream of container(s) resource usage statistics
  stop        Stop one or more running containers
  top         Display the running processes of a container
  unpause     Unpause all processes within one or more containers
  update      Update configuration of one or more containers
  wait        Block until one or more containers stop, then print their exit codes

Run 'docker container COMMAND --help' for more information on a command.
四ツ山伊吹四ツ山伊吹

ふつうに Dockerfile をビルドしてDocker imageを作成し、そこからDocker containerをアプリケーションとして実行するというワークフローにおいては、 imagecontainer ふたつのサブコマンドさえ把握しておけばよさそう?

このスクラップは2023/10/19にクローズされました