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dockerでCentOSのイメージを使ってみる

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環境情報

  • OS: Linux (centos 7.7.1908)
  • docker: 19.03.5

手順

centos7のイメージを取得

docker pull centos:7

実行結果

[root@centos-sample aky100200]# docker pull centos:7
7: Pulling from library/centos
ab5ef0e58194: Pull complete
Digest: sha256:4a701376d03f6b39b8c2a8f4a8e499441b0d567f9ab9d58e4991de4472fb813c
Status: Downloaded newer image for centos:7
docker.io/library/centos:7
[root@centos-sample aky100200]#

イメージの確認

docker images

実行結果

[root@centos-sample aky100200]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
centos              7                   5e35e350aded        3 months ago        203MB
hello-world         latest              fce289e99eb9        13 months ago       1.84kB
[root@centos-sample aky100200]#

起動

docker run -it -d --name centos7 centos:7

実行結果

[root@centos-sample aky100200]# docker run -it -d --name centos7 centos:7
fdc5ffc971420c60228330c1b9f7b4030878836e74f5590614774e8d35518694
[root@centos-sample aky100200]#

プロセスの起動を確認

docker ps

実行結果

[root@centos-sample aky100200]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED              STATUS              PORTS               NAMES
fdc5ffc97142        centos:7            "/bin/bash"         About a minute ago   Up About a minute                       centos7
[root@centos-sample aky100200]#

コンテナ内コマンドの実行

docker exec -it centos7 /bin/bash

実行結果

[root@centos-sample aky100200]# docker exec -it centos7 /bin/bash
[root@fdc5ffc97142 /]#

まとめ

イメージの作成ができた。

参考

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