UbuntuにDockerをインストール

UbuntuにDockerをインストールするまで

環境

OS	Ubuntu 18.04.3 LTS
Docker	19.03.12

手順

既にインストールされているDockerは削除する

$ sudo apt-get remove docker docker-engine docker.io containerd runc

1	$ sudo apt-get remove docker docker-engine docker.io containerd runc

パッケージ情報を更新する

$ sudo apt-get update

1	$ sudo apt-get update

Dockerのリポジトリをインストールするためのパッケージをインストールする

$ sudo apt-get install -y apt-transport-https ca-certificates curl gunpg-agent software-properties-common

1	$ sudo apt-get install -y apt-transport-https ca-certificates curl gunpg-agent software-properties-common

Dockerのパッケージの署名を検証するための、GPG鍵を追加する

$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

1	$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg \| sudo apt-key add -

鍵があるか確かめる

$ apt-key list | grep docker
Warning: apt-key output should not be parsed (stdout is not a terminal)
uid           [  不明  ] Docker Release (CE deb) <docker@docker.com>

$ apt-key list | grep docker

Warning: apt-key output should not be parsed (stdout is not a terminal)

uid [ 不明 ] Docker Release (CE deb) <docker@docker.com>

Ubuntuがamd64(x86_64)用のリポジトリを追加する

$ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

1	$ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

Dockerをインストールする

$ sudo apt-get update
$ sudo apt-get install -y docker-ce docker-ce-cli containerd.io

1 2	$ sudo apt-get update $ sudo apt-get install -y docker-ce docker-ce-cli containerd.io

Dockerのバージョンを確認する

$ sudo docker version
Client: Docker Engine - Community
 Version:           19.03.12
 API version:       1.40
 Go version:        go1.13.10
 Git commit:        48a66213fe
 Built:             Mon Jun 22 15:45:36 2020
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.12
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.13.10
  Git commit:       48a66213fe
  Built:            Mon Jun 22 15:44:07 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.13
  GitCommit:        7ad184331fa3e55e52b890ea95e65ba581ae3429
 runc:
  Version:          1.0.0-rc10
  GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

$ sudo docker version

Client: Docker Engine - Community

Version: 19.03.12

API version: 1.40

Go version: go1.13.10

Git commit: 48a66213fe

Built: Mon Jun 22 15:45:36 2020

OS/Arch: linux/amd64

Experimental: false

Server: Docker Engine - Community

Engine:

Version: 19.03.12

API version: 1.40 (minimum version 1.12)

Go version: go1.13.10

Git commit: 48a66213fe

Built: Mon Jun 22 15:44:07 2020

OS/Arch: linux/amd64

Experimental: false

containerd:

Version: 1.2.13

GitCommit: 7ad184331fa3e55e52b890ea95e65ba581ae3429

runc:

Version: 1.0.0-rc10

GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd

docker-init:

Version: 0.18.0

GitCommit: fec3683

Dockerが実行できるかテスト

$ sudo docker run hello-world

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

$ sudo docker run hello-world

Hello from Docker!

This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:

1. The Docker client contacted the Docker daemon.

2. The Docker daemon pulled the "hello-world" image from the Docker Hub.

(amd64)

3. The Docker daemon created a new container from that image which runs the

executable that produces the output you are currently reading.

4. The Docker daemon streamed that output to the Docker client, which sent it

to your terminal.

To try something more ambitious, you can run an Ubuntu container with:

$ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:

https://hub.docker.com/

For more examples and ideas, visit:

https://docs.docker.com/get-started/