AWSでDockerをためしてみる

DockerTest

1. まずはDockeをインストール
$ sudo yum install -y docker

2. Dockerのデーモンをスタート
$ sudo service docker start

3. Docker 公式サイトで提供されているチュートリアル用のコンテナを取得
$ sudo docker pull learn/tutorial

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[ec2-user@ip-172-16-0-19 ~]$ sudo docker pull learn/tutorial
Pulling repository learn/tutorial
8dbd9e392a96: Download complete
Status: Downloaded newer image for learn/tutorial:latest
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4. 取得した結果を確認
$ sudo docker images

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[ec2-user@ip-172-16-0-19 ~]$ sudo docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
learn/tutorial      latest              8dbd9e392a96        20 months ago       128 MB
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5. 取得したコンテナで動作チェック("docker run image名 コマンド" でimage名のコンテナ内でコマンド実行することになる)
$ sudo docker run learn/tutorial echo Hello, Docker!

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[ec2-user@ip-172-16-0-19 ~]$ sudo docker run learn/tutorial echo Hello, Docker!
Hello, Docker!
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6. "learn/tutorial"コンテナにpingをインストール
$ sudo docker run learn/tutorial apt-get install -y ping

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[ec2-user@ip-172-16-0-19 ~]$ sudo docker run learn/tutorial apt-get install -y ping
Reading package lists...
Building dependency tree...
The following NEW packages will be installed:
  iputils-ping
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 56.1 kB of archives.
After this operation, 143 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu/ precise/main iputils-ping amd64 3:20101006-1ubuntu1 [56.1 kB]
debconf: delaying package configuration, since apt-utils is not installed
Fetched 56.1 kB in 1s (49.5 kB/s)
Selecting previously unselected package iputils-ping.
(Reading database ... 7545 files and directories currently installed.)
Unpacking iputils-ping (from .../iputils-ping_3%3a20101006-1ubuntu1_amd64.deb) ...
Setting up iputils-ping (3:20101006-1ubuntu1) ...
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7. コンテナの一覧を確認
$ sudo docker ps -l

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[ec2-user@ip-172-16-0-19 ~]$ sudo docker ps -l
CONTAINER ID        IMAGE                   COMMAND                CREATED             STATUS                      PORTS               NAMES
5961c6ae223f        learn/tutorial:latest   "apt-get install -y    58 seconds ago      Exited (0) 56 seconds ago                       clever_lalande
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8. コンテナの保存(commitのあとに上記ps -lで確認できるCONTAINER IDの上4ケタをセット。そのあとにコンテナ名をセット)
$ sudo docker commit 5961 learn/ping


9. コンテナの確認
$ sudo docker images

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[ec2-user@ip-172-16-0-19 ~]$ sudo docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
learn/ping          latest              5e6ea157f99a        15 seconds ago      139.5 MB
learn/tutorial      latest              8dbd9e392a96        20 months ago       128 MB
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10. 作成したコンテナ上でpingしてみる(ちゃんと保存できてればはじめからpingはいったコンテナだよね、て確認)
$ sudo docker run learn/ping ping hogehoge.com

参考↓てかまんまです。

AWSでDockerを使ってみよう！
http://www.techscore.com/blog/2014/07/08/try-docker-on-aws/