docker_cheatsheet
dockerの始め方
環境構築例
docker imageを取得する方法
docker imageを取得する
docker pull ubuntu:16.04
インストールされているdocker imageの確認
docker images
新しいコンテナを作成しコマンドを走らせる
iオプションとtオプションを同時につけることによって操作可能となる
docker run -it -d --name my-ubuntu ubuntu:16.04
docker run -d --name my-ubuntu ubuntu:16.04
現在起動中のコンテナを確認する
docker ps
現在起動中のコンテナを停止させる
docker stop {CONTAINER NAME}
既存のコンテナを稼働させる
docker stop {CONTAINER NAME}
command helps
docker pull
Usage: docker pull [OPTIONS] NAME[:TAG|@DIGEST]
Pull an image or a repository from a registry
Options:
-a, --all-tags Download all tagged images in the repository
--disable-content-trust Skip image verification (default true)
--platform string Set platform if server is multi-platform capable
-q, --quiet Suppress verbose output
docker images
Usage: docker images [OPTIONS] [REPOSITORY[:TAG]]
List images
Options:
-a, --all Show all images (default hides intermediate images)
--digests Show digests
-f, --filter filter Filter output based on conditions provided
--format string Pretty-print images using a Go template
--no-trunc Don't truncate output
-q, --quiet Only show numeric IDs
docker run
Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
Run a command in a new container
Options:
（多いので一部抜粋）
-i, --interactive Keep STDIN open even if not attached
-t, --tty Allocate a pseudo-TTY
-d, --detach Run container in background and print container ID
--name string Assign a name to the container
docker ps
Usage: docker ps [OPTIONS]
List containers
Options:
-a, --all Show all containers (default shows just running)
-f, --filter filter Filter output based on conditions provided
--format string Pretty-print containers using a Go template
-n, --last int Show n last created containers (includes all states) (default -1)
-l, --latest Show the latest created container (includes all states)
--no-trunc Don't truncate output
-q, --quiet Only display numeric IDs
-s, --size Display total file sizes
docker attach
Usage: docker attach [OPTIONS] CONTAINER
Attach local standard input, output, and error streams to a running container
Options:
--detach-keys string Override the key sequence for detaching a container
--no-stdin Do not attach STDIN
--sig-proxy Proxy all received signals to the process (default true)
docker exec
Usage: docker exec [OPTIONS] CONTAINER COMMAND [ARG...]
Run a command in a running container
Options:
-d, --detach Detached mode: run command in the background
--detach-keys string Override the key sequence for detaching a container
-e, --env list Set environment variables
-i, --interactive Keep STDIN open even if not attached
--privileged Give extended privileges to the command
-t, --tty Allocate a pseudo-TTY
-u, --user string Username or UID (format: <name|uid>[:<group|gid>])
-w, --workdir string Working directory inside the container
docker stop
Usage: docker stop [OPTIONS] CONTAINER [CONTAINER...]
Stop one or more running containers
Options:
-t, --time int Seconds to wait for stop before killing it (default 10)
docker start
Usage: docker start [OPTIONS] CONTAINER [CONTAINER...]
Start one or more stopped containers
Options:
-a, --attach Attach STDOUT/STDERR and forward signals
--checkpoint string Restore from this checkpoint
--checkpoint-dir string Use a custom checkpoint storage directory
--detach-keys string Override the key sequence for detaching a container
-i, --interactive Attach container's STDIN
作成済みで停止中のコンテナを起動させます。 「a」オプションでコンテナの出力を表示させます。 結果を垂れ流して、監視するときとかに使うのかな？ちょっとよく分かってないです。 「i」オプションでコンテナの標準入力に装着し、相互モードとなります。 通常のターミナルのように扱えます。
docker start -i {CONTAINER NAME}
これはよく使います。