インストール: docker

ネットで、公式が間違ってるという記事がありましたが、公式に以下の記述があります

Raspbian users cannot use this method!
For Raspbian, installing using the repository is not yet supported. You must instead use the convenience script.

なのでこちらを見ながら進めます

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$ curl -fsSL https://get.docker.com -o get-docker.sh
$ sudo sh ./get-docker.sh

インストール: docker-compose

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// apt-lineの確認
$ cat /etc/apt/sources.list
deb http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free rpi

// 必要な物をインストール
$ sudo apt install -y python-dev python-pip libffi-dev libssl-dev

// pipでdocker-composeのインストール
$ pip install docker-compose

そのままだとPATHが通っていませんでした

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$ docker-compose -v
-bash: docker-compose: command not found

// どこにあるか確認
$ sudo find / -name docker-compose
/home/pi/.local/bin/docker-compose

// そのまま実行しても別のエラー
$ python .local/bin/docker-compose -v
Traceback (most recent call last):
  File ".local/bin/docker-compose", line 6, in <module>
    from compose.cli.main import main
  File "/home/pi/.local/lib/python2.7/site-packages/compose/cli/main.py", line 18, in <module>
    import docker.errors
  File "/home/pi/.local/lib/python2.7/site-packages/docker/__init__.py", line 2, in <module>
    from .api import APIClient
  File "/home/pi/.local/lib/python2.7/site-packages/docker/api/__init__.py", line 2, in <module>
    from .client import APIClient
  File "/home/pi/.local/lib/python2.7/site-packages/docker/api/client.py", line 10, in <module>
    from .build import BuildApiMixin
  File "/home/pi/.local/lib/python2.7/site-packages/docker/api/build.py", line 6, in <module>
    from .. import auth
  File "/home/pi/.local/lib/python2.7/site-packages/docker/auth.py", line 9, in <module>
    from .utils import config
  File "/home/pi/.local/lib/python2.7/site-packages/docker/utils/__init__.py", line 3, in <module>
    from .decorators import check_resource, minimum_version, update_headers
  File "/home/pi/.local/lib/python2.7/site-packages/docker/utils/decorators.py", line 4, in <module>
    from . import utils
  File "/home/pi/.local/lib/python2.7/site-packages/docker/utils/utils.py", line 13, in <module>
    from .. import tls
  File "/home/pi/.local/lib/python2.7/site-packages/docker/tls.py", line 5, in <module>
    from .transport import SSLHTTPAdapter
  File "/home/pi/.local/lib/python2.7/site-packages/docker/transport/__init__.py", line 3, in <module>
    from .ssladapter import SSLHTTPAdapter
  File "/home/pi/.local/lib/python2.7/site-packages/docker/transport/ssladapter.py", line 23, in <module>
    from backports.ssl_match_hostname import match_hostname
ImportError: No module named ssl_match_hostname

PATHを通せば解決しました

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// .bash_profileなどに以下を書いてPATHを通す
$ cat .bash_profile | grep PATH
PATH="$PATH":/home/pi/.local/bin/
PATH="$PATH":/home/pi/.local/lib/python2.7/site-packages

$ docker-compose -v
docker-compose version 1.25.3, build unknown