debianでdockerを使ってみる

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</style></head><body><article id="089186db-1bb6-48f7-b0f5-68b666541aa8" class="page sans"><header><h1 class="page-title">Docker for debian</h1><p class="page-description"></p></header><div class="page-body"><p id="25b8d9f3-53ac-4176-bcea-86da7f6892fe" class="">Dockerを使用してDebianサーバを作成する方法は非常にシンプルで、以下の手順で行うことができます。まずは、Dockerがインストールされていることを確認しましょう。まだインストールされていない場合は、公式のDockerウェブサイトからダウンロードしてインストールしてください。</p><p id="6b803107-b181-4fac-84ee-c7bfcbcc1ad8" class=""><strong>1. Dockerイメージの取得</strong></p><p id="3f696596-315a-49b8-9b79-8cfc3134bb45" class="">まず、Debianの公式Dockerイメージを取得します。以下のコマンドを実行してください。これにより、Debianの最新版がダウンロードされます。</p><pre id="055e2b3c-d262-49d9-a828-a60268f2878c" class="code code-wrap"><code>
docker pull debian

</code></pre><p id="c4d625c6-67e1-4165-ae2f-48b8c2c32d41" class=""><strong>2. Dockerコンテナの作成</strong></p><p id="f1d8a361-c9de-4543-b7a3-e3dd61bd76a6" class="">次に、Debianイメージを基にコンテナを作成します。以下のコマンドを実行します。これにより、コンテナが作成され、シェルが開きます。ここではコンテナの名前を <code><strong>my_debian</strong></code> としています。</p><pre id="d7a5daa0-5220-4ae3-824b-12263ddf1f7c" class="code code-wrap"><code>
docker run -it --name my_debian debian bash

</code></pre><p id="9c43546a-119f-40ad-8cb3-78a98928df4b" class="">このコマンドを解説すると、<code><strong>-it</strong></code>はインタラクティブモードでコンテナを起動し、ターミナルを接続するオプション、<code><strong>--name</strong></code>でコンテナに名前をつけることができます。そして最後に、<code><strong>debian</strong></code>は使用するイメージ名、<code><strong>bash</strong></code>はコンテナ起動後に実行するコマンドを指定しています。</p><p id="4c3b0098-3ec4-46b1-9811-a94a40e25bad" class="">コマンドを実行すると、コマンドプロンプトがDebianのものに変わります。これで、Debianサーバの準備ができました。</p><p id="3353a8f7-80cb-427d-8896-d71661c52e07" class=""><strong>3. コンテナの操作</strong></p><p id="e7b3c0fe-d889-4207-80bf-aa6f0f78fcd0" class="">コンテナ内で操作を行うことができます。例えば、パッケージを更新したり新しいパッケージをインストールしたりできます。以下のコマンドはパッケージリストを更新し、<code><strong>nano</strong></code>というエディタをインストールする例です。</p><pre id="6e294a52-d78e-42bc-8deb-58526a478530" class="code code-wrap"><code>
apt-get update
apt-get install nano

</code></pre><p id="1def25b8-149e-493f-9e88-ba8bdf9b964e" class="">コンテナから出るには <code><strong>exit</strong></code> コマンドを実行します。</p><p id="11879d31-ab33-4cb2-ad6f-94c87b4eadc1" class=""><strong>4. コンテナの再起動</strong></p><p id="17992bad-f3d0-4d60-ba63-8fdb42da4c73" class="">コンテナから出た後でも、コンテナは再起動できます。以下のコマンドでコンテナ <code><strong>my_debian</strong></code> を再起動してシェルに接続します。</p><pre id="2b42b4dd-19a6-432b-89cb-72705eb98e4f" class="code code-wrap"><code>
docker start -i my_debian

</code></pre><p id="27a4f822-720b-4d44-832a-542e9cf751dd" class="">以上で、Dockerを使用してDebianサーバを作成し、操作する方法を学びました。</p></div></article></body></html>