Raspberry Pi に Docker Composeをインストールする

最新のDockerインストール方法を、ラズパイ専用のサイトにまとめましたので、是非ご覧ください。

以下は2021年当時の内容となります。

前回の記事ではRaspberry PiにDockerをインストールしました。

今回はDocker ComposeをRaspberry Piにインストールしてみます。

対象

項目	説明
Raspberry Pi	Raspberry Pi 4 model B 8GB
OS	Raspberry Pi OS 64bit
インストール済みパッケージ	Docker

事前調査

前回のDockerインストールと同様に、まずは公式サイトをのぞいてみます。

https://docs.docker.com/compose/install/

Raspberry Piへのインストールに関してのそのものズバリの記載はありませんでしたので、Linuxへのインストール方法を確認してみます。

LinuxへDocker Composeをインストールする方法は現時点では以下の３つの方法がありそうです。

GitHubからバイナリをダウンロード
コンテナとしてインストール
pipを利用してインストール

Raspberry Pi OS 64bitのアーキテクチャはaarch64なので、１番のバイナリは動かない気がしますが、全ての方法を試してみます。

方法１．GitHubからバイナリをダウンロード（失敗）

結論から言うとこの方法は使えませんでした。GitHubに置いてあるバイナリはx86_64用のものであり、Raspberry Piには適用できません。次の方法を試します。

方法２．コンテナとしてインストール（失敗）

Docker Composeをコンテナとしてインストールする方法です。こちらの方法が使えると環境を汚染せずにDocker Composeを利用できるため期待していたのですが、こちらもだめでした。

以下、実際にコンテナとしてインストールしてみた際のログです。試しにdocker-compose psコマンドで起動確認をしたところ、アーキテクチャが一致せず起動できないことを確認できました。

コンソール

$ sudo curl -L --fail https://github.com/docker/compose/releases/download/1.29.1/run.sh -o /usr/local/bin/docker-compose
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   612  100   612    0     0   1096      0 --:--:-- --:--:-- --:--:--  1098
100  2585  100  2585    0     0   3207      0 --:--:-- --:--:-- --:--:-- 73857
$ sudo chmod +x /usr/local/bin/docker-compose
$ docker-compose ps
WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested
standard_init_linux.go:219: exec user process caused: exec format error

方法３．pipを利用してインストール（成功、でもちょっとした落とし穴あり）

pip（Pythonのパッケージマネージャ）を利用してインストールしてみます。

pip3 install docker-composeコマンドでエラー発生

PyPiのプロジェクト検索にてDocker Composeを調べてみたところ、pip経由でDocker Composeをインストールする場合、Pythonのバージョンは3.6以上でないといけないことが分かりました。Raspberry Pi OS 64bitにてpipコマンドを使う場合、デフォルトではPython 2.7が利用されてしまうため、明示的にpip3としてPython 3を利用するようにします。（落とし穴１つめ）

コンソール

$ pip3 install docker-compose

実行結果省略（クリックorタップで全部見れます）

Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting docker-compose
  Downloading https://files.pythonhosted.org/packages/68/5f/341e60edaff653942ae78d3036eb7fa0994b53582ed87beb8317d182d70f/docker_compose-1.29.1-py2.py3-none-any.whl (114kB)
    100% |████████████████████████████████| 122kB 2.3MB/s 
Collecting websocket-client<1,>=0.32.0 (from docker-compose)
  Downloading https://files.pythonhosted.org/packages/08/33/80e0d4f60e84a1ddd9a03f340be1065a2a363c47ce65c4bd3bae65ce9631/websocket_client-0.58.0-py2.py3-none-any.whl (61kB)
    100% |████████████████████████████████| 61kB 2.4MB/s 
Collecting PyYAML<6,>=3.10 (from docker-compose)
  Downloading https://files.pythonhosted.org/packages/a0/a4/d63f2d7597e1a4b55aa3b4d6c5b029991d3b824b5bd331af8d4ab1ed687d/PyYAML-5.4.1.tar.gz (175kB)
    100% |████████████████████████████████| 184kB 2.0MB/s 
  Installing build dependencies ... done
Requirement already satisfied: requests<3,>=2.20.0 in /usr/lib/python3/dist-packages (from docker-compose) (2.21.0)
Collecting jsonschema<4,>=2.5.1 (from docker-compose)
  Downloading https://files.pythonhosted.org/packages/c5/8f/51e89ce52a085483359217bc72cdbf6e75ee595d5b1d4b5ade40c7e018b8/jsonschema-3.2.0-py2.py3-none-any.whl (56kB)
    100% |████████████████████████████████| 61kB 2.8MB/s 
Collecting docopt<1,>=0.6.1 (from docker-compose)
  Downloading https://www.piwheels.org/simple/docopt/docopt-0.6.2-py2.py3-none-any.whl
Collecting dockerpty<1,>=0.4.1 (from docker-compose)
  Downloading https://www.piwheels.org/simple/dockerpty/dockerpty-0.4.1-py3-none-any.whl
Collecting cached-property<2,>=1.2.0; python_version < "3.8" (from docker-compose)
  Downloading https://files.pythonhosted.org/packages/48/19/f2090f7dad41e225c7f2326e4cfe6fff49e57dedb5b53636c9551f86b069/cached_property-1.5.2-py2.py3-none-any.whl
Collecting texttable<2,>=0.9.0 (from docker-compose)
  Downloading https://files.pythonhosted.org/packages/06/f5/46201c428aebe0eecfa83df66bf3e6caa29659dbac5a56ddfd83cae0d4a4/texttable-1.6.3-py2.py3-none-any.whl
Collecting distro<2,>=1.5.0 (from docker-compose)
  Downloading https://files.pythonhosted.org/packages/25/b7/b3c4270a11414cb22c6352ebc7a83aaa3712043be29daa05018fd5a5c956/distro-1.5.0-py2.py3-none-any.whl
Collecting docker[ssh]>=5 (from docker-compose)
  Downloading https://files.pythonhosted.org/packages/b2/5a/f988909dfed18c1ac42ad8d9e611e6c5657e270aa6eb68559985dbb69c13/docker-5.0.0-py2.py3-none-any.whl (146kB)
    100% |████████████████████████████████| 153kB 2.2MB/s 
Collecting python-dotenv<1,>=0.13.0 (from docker-compose)
  Downloading https://files.pythonhosted.org/packages/86/62/aacbd1489fc6026c9278e9fd5cfdd49c5b1b5375d3c97a624e8f8f999eb2/python_dotenv-0.17.0-py2.py3-none-any.whl
Requirement already satisfied: six in /usr/lib/python3/dist-packages (from websocket-client<1,>=0.32.0->docker-compose) (1.12.0)
Collecting importlib-metadata; python_version < "3.8" (from jsonschema<4,>=2.5.1->docker-compose)
  Downloading https://files.pythonhosted.org/packages/41/fb/3433b27dbf9bcfe48286dbc29b918e312cbbcc23de6686cc40b81b0180de/importlib_metadata-4.0.0-py3-none-any.whl
Collecting attrs>=17.4.0 (from jsonschema<4,>=2.5.1->docker-compose)
  Downloading https://files.pythonhosted.org/packages/c3/aa/cb45262569fcc047bf070b5de61813724d6726db83259222cd7b4c79821a/attrs-20.3.0-py2.py3-none-any.whl (49kB)
    100% |████████████████████████████████| 51kB 2.8MB/s 
Collecting pyrsistent>=0.14.0 (from jsonschema<4,>=2.5.1->docker-compose)
  Downloading https://files.pythonhosted.org/packages/4d/70/fd441df751ba8b620e03fd2d2d9ca902103119616f0f6cc42e6405035062/pyrsistent-0.17.3.tar.gz (106kB)
    100% |████████████████████████████████| 112kB 3.0MB/s 
Requirement already satisfied: setuptools in /usr/lib/python3/dist-packages (from jsonschema<4,>=2.5.1->docker-compose) (40.8.0)
Collecting paramiko>=2.4.2; extra == "ssh" (from docker[ssh]>=5->docker-compose)
  Downloading https://files.pythonhosted.org/packages/95/19/124e9287b43e6ff3ebb9cdea3e5e8e88475a873c05ccdf8b7e20d2c4201e/paramiko-2.7.2-py2.py3-none-any.whl (206kB)
    100% |████████████████████████████████| 215kB 2.0MB/s 
Collecting zipp>=0.5 (from importlib-metadata; python_version < "3.8"->jsonschema<4,>=2.5.1->docker-compose)
  Downloading https://files.pythonhosted.org/packages/0f/8c/715c54e9e34c0c4820f616a913a7de3337d0cd79074dd1bed4dd840f16ae/zipp-3.4.1-py3-none-any.whl
Collecting typing-extensions>=3.6.4; python_version < "3.8" (from importlib-metadata; python_version < "3.8"->jsonschema<4,>=2.5.1->docker-compose)
  Downloading https://files.pythonhosted.org/packages/60/7a/e881b5abb54db0e6e671ab088d079c57ce54e8a01a3ca443f561ccadb37e/typing_extensions-3.7.4.3-py3-none-any.whl
Collecting pynacl>=1.0.1 (from paramiko>=2.4.2; extra == "ssh"->docker[ssh]>=5->docker-compose)
  Downloading https://files.pythonhosted.org/packages/cf/5a/25aeb636baeceab15c8e57e66b8aa930c011ec1c035f284170cacb05025e/PyNaCl-1.4.0.tar.gz (3.4MB)
    100% |████████████████████████████████| 3.4MB 159kB/s 
  Installing build dependencies ... error
  Complete output from command /usr/bin/python3 -m pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-im22819t --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple --extra-index-url https://www.piwheels.org/simple -- setuptools>=40.8.0 wheel "cffi>=1.4.1; python_implementation != 'PyPy'":
  Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple, https://www.piwheels.org/simple
  Collecting setuptools>=40.8.0
    Using cached https://files.pythonhosted.org/packages/ae/42/2876a3a136f8bfa9bd703518441c8db78ff1eeaddf174baa85c083c1fd15/setuptools-56.0.0-py3-none-any.whl
  Collecting wheel
    Using cached https://files.pythonhosted.org/packages/65/63/39d04c74222770ed1589c0eaba06c05891801219272420b40311cd60c880/wheel-0.36.2-py2.py3-none-any.whl
  Collecting cffi>=1.4.1
    Downloading https://files.pythonhosted.org/packages/a8/20/025f59f929bbcaa579704f443a438135918484fffaacfaddba776b374563/cffi-1.14.5.tar.gz (475kB)
  Collecting pycparser (from cffi>=1.4.1)
    Downloading https://files.pythonhosted.org/packages/ae/e7/d9c3a176ca4b02024debf82342dab36efadfc5776f9c8db077e8f6e71821/pycparser-2.20-py2.py3-none-any.whl (112kB)
  Building wheels for collected packages: cffi
    Running setup.py bdist_wheel for cffi: started
    Running setup.py bdist_wheel for cffi: finished with status 'error'
    Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-__ssr652/cffi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/pip-wheel-kvtr5joq --python-tag cp37:
    Package libffi was not found in the pkg-config search path.
    Perhaps you should add the directory containing `libffi.pc'
    to the PKG_CONFIG_PATH environment variable
    No package 'libffi' found
    Package libffi was not found in the pkg-config search path.
    Perhaps you should add the directory containing `libffi.pc'
    to the PKG_CONFIG_PATH environment variable
    No package 'libffi' found
    Package libffi was not found in the pkg-config search path.
    Perhaps you should add the directory containing `libffi.pc'
    to the PKG_CONFIG_PATH environment variable
    No package 'libffi' found
    Package libffi was not found in the pkg-config search path.
    Perhaps you should add the directory containing `libffi.pc'
    to the PKG_CONFIG_PATH environment variable
    No package 'libffi' found
    Package libffi was not found in the pkg-config search path.
    Perhaps you should add the directory containing `libffi.pc'
    to the PKG_CONFIG_PATH environment variable
    No package 'libffi' found
    running bdist_wheel
    running build
    running build_py
    creating build
    creating build/lib.linux-aarch64-3.7
    creating build/lib.linux-aarch64-3.7/cffi
    copying cffi/setuptools_ext.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/commontypes.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/api.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/lock.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/cparser.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/vengine_cpy.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/verifier.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/error.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/vengine_gen.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/__init__.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/recompiler.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/pkgconfig.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/ffiplatform.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/cffi_opcode.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/backend_ctypes.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/model.py -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/_cffi_include.h -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/parse_c_type.h -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/_embedding.h -> build/lib.linux-aarch64-3.7/cffi
    copying cffi/_cffi_errors.h -> build/lib.linux-aarch64-3.7/cffi
    running build_ext
    building '_cffi_backend' extension
    creating build/temp.linux-aarch64-3.7
    creating build/temp.linux-aarch64-3.7/c
    aarch64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/usr/include/python3.7m -c c/_cffi_backend.c -o build/temp.linux-aarch64-3.7/c/_cffi_backend.o
    c/_cffi_backend.c:15:10: fatal error: ffi.h: No such file or directory
     #include <ffi.h>
              ^~~~~~~
    compilation terminated.
    error: command 'aarch64-linux-gnu-gcc' failed with exit status 1
  
    ----------------------------------------
    Failed building wheel for cffi
    Running setup.py clean for cffi
  Failed to build cffi
  Installing collected packages: setuptools, wheel, pycparser, cffi
    Running setup.py install for cffi: started
      Running setup.py install for cffi: finished with status 'error'
      Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-__ssr652/cffi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-jw6c9_ww/install-record.txt --single-version-externally-managed --prefix /tmp/pip-build-env-im22819t --compile:
      Package libffi was not found in the pkg-config search path.
      Perhaps you should add the directory containing `libffi.pc'
      to the PKG_CONFIG_PATH environment variable
      No package 'libffi' found
      Package libffi was not found in the pkg-config search path.
      Perhaps you should add the directory containing `libffi.pc'
      to the PKG_CONFIG_PATH environment variable
      No package 'libffi' found
      Package libffi was not found in the pkg-config search path.
      Perhaps you should add the directory containing `libffi.pc'
      to the PKG_CONFIG_PATH environment variable
      No package 'libffi' found
      Package libffi was not found in the pkg-config search path.
      Perhaps you should add the directory containing `libffi.pc'
      to the PKG_CONFIG_PATH environment variable
      No package 'libffi' found
      Package libffi was not found in the pkg-config search path.
      Perhaps you should add the directory containing `libffi.pc'
      to the PKG_CONFIG_PATH environment variable
      No package 'libffi' found
      running install
      running build
      running build_py
      creating build
      creating build/lib.linux-aarch64-3.7
      creating build/lib.linux-aarch64-3.7/cffi
      copying cffi/setuptools_ext.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/commontypes.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/api.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/lock.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/cparser.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/vengine_cpy.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/verifier.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/error.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/vengine_gen.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/__init__.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/recompiler.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/pkgconfig.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/ffiplatform.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/cffi_opcode.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/backend_ctypes.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/model.py -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/_cffi_include.h -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/parse_c_type.h -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/_embedding.h -> build/lib.linux-aarch64-3.7/cffi
      copying cffi/_cffi_errors.h -> build/lib.linux-aarch64-3.7/cffi
      running build_ext
      building '_cffi_backend' extension
      creating build/temp.linux-aarch64-3.7
      creating build/temp.linux-aarch64-3.7/c
      aarch64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/usr/include/python3.7m -c c/_cffi_backend.c -o build/temp.linux-aarch64-3.7/c/_cffi_backend.o
      c/_cffi_backend.c:15:10: fatal error: ffi.h: No such file or directory
       #include <ffi.h>
                ^~~~~~~
      compilation terminated.
      error: command 'aarch64-linux-gnu-gcc' failed with exit status 1
  
      ----------------------------------------
  Command "/usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-__ssr652/cffi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-jw6c9_ww/install-record.txt --single-version-externally-managed --prefix /tmp/pip-build-env-im22819t --compile" failed with error code 1 in /tmp/pip-install-__ssr652/cffi/
  
  ----------------------------------------
Command "/usr/bin/python3 -m pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-im22819t --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple --extra-index-url https://www.piwheels.org/simple -- setuptools>=40.8.0 wheel "cffi>=1.4.1; python_implementation != 'PyPy'"" failed with error code 1 in None

・・・
      c/_cffi_backend.c:15:10: fatal error: ffi.h: No such file or directory
       #include <ffi.h>
                ^~~~~~~
      compilation terminated.
      error: command 'aarch64-linux-gnu-gcc' failed with exit status 1
  
      ----------------------------------------
  Command "/usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-__ssr652/cffi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-jw6c9_ww/install-record.txt --single-version-externally-managed --prefix /tmp/pip-build-env-im22819t --compile" failed with error code 1 in /tmp/pip-install-__ssr652/cffi/
  
  ----------------------------------------
Command "/usr/bin/python3 -m pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-im22819t --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple --extra-index-url https://www.piwheels.org/simple -- setuptools>=40.8.0 wheel "cffi>=1.4.1; python_implementation != 'PyPy'"" failed with error code 1 in None

どうやらffi.hというヘッダファイルがなくてコンパイルに失敗したようです。（落とし穴２つ目）

libffi-devをインストールし、再度pip3 install docker-composeを実行

Debianパッケージ検索にてffi.hを検索してみたところ、libffi-devパッケージをインストールすればいけそうな感じでしたので、libffi-devパッケージをインストールして再チャレンジします。

コンソール

$ sudo apt install libffi-dev

実行結果省略（クリックorタップで全部見れます）

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following NEW packages will be installed:
  libffi-dev
0 upgraded, 1 newly installed, 0 to remove and 74 not upgraded.
Need to get 155 kB of archives.
After this operation, 349 kB of additional disk space will be used.
Get:1 http://deb.debian.org/debian buster/main arm64 libffi-dev arm64 3.2.1-9 [155 kB]
Fetched 155 kB in 0s (916 kB/s)
Selecting previously unselected package libffi-dev:arm64.
(Reading database ... 89524 files and directories currently installed.)
Preparing to unpack .../libffi-dev_3.2.1-9_arm64.deb ...
Unpacking libffi-dev:arm64 (3.2.1-9) ...
Setting up libffi-dev:arm64 (3.2.1-9) ...
Processing triggers for man-db (2.8.5-2) ...

$ pip3 install docker-compose

実行結果省略（クリックorタップで全部見れます）

Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting docker-compose
  Using cached https://files.pythonhosted.org/packages/68/5f/341e60edaff653942ae78d3036eb7fa0994b53582ed87beb8317d182d70f/docker_compose-1.29.1-py2.py3-none-any.whl
Collecting websocket-client<1,>=0.32.0 (from docker-compose)
  Using cached https://files.pythonhosted.org/packages/08/33/80e0d4f60e84a1ddd9a03f340be1065a2a363c47ce65c4bd3bae65ce9631/websocket_client-0.58.0-py2.py3-none-any.whl
Collecting jsonschema<4,>=2.5.1 (from docker-compose)
  Using cached https://files.pythonhosted.org/packages/c5/8f/51e89ce52a085483359217bc72cdbf6e75ee595d5b1d4b5ade40c7e018b8/jsonschema-3.2.0-py2.py3-none-any.whl
Collecting dockerpty<1,>=0.4.1 (from docker-compose)
  Using cached https://www.piwheels.org/simple/dockerpty/dockerpty-0.4.1-py3-none-any.whl
Requirement already satisfied: requests<3,>=2.20.0 in /usr/lib/python3/dist-packages (from docker-compose) (2.21.0)
Collecting distro<2,>=1.5.0 (from docker-compose)
  Using cached https://files.pythonhosted.org/packages/25/b7/b3c4270a11414cb22c6352ebc7a83aaa3712043be29daa05018fd5a5c956/distro-1.5.0-py2.py3-none-any.whl
Collecting python-dotenv<1,>=0.13.0 (from docker-compose)
  Using cached https://files.pythonhosted.org/packages/86/62/aacbd1489fc6026c9278e9fd5cfdd49c5b1b5375d3c97a624e8f8f999eb2/python_dotenv-0.17.0-py2.py3-none-any.whl
Collecting docopt<1,>=0.6.1 (from docker-compose)
  Using cached https://www.piwheels.org/simple/docopt/docopt-0.6.2-py2.py3-none-any.whl
Collecting cached-property<2,>=1.2.0; python_version < "3.8" (from docker-compose)
  Using cached https://files.pythonhosted.org/packages/48/19/f2090f7dad41e225c7f2326e4cfe6fff49e57dedb5b53636c9551f86b069/cached_property-1.5.2-py2.py3-none-any.whl
Collecting texttable<2,>=0.9.0 (from docker-compose)
  Using cached https://files.pythonhosted.org/packages/06/f5/46201c428aebe0eecfa83df66bf3e6caa29659dbac5a56ddfd83cae0d4a4/texttable-1.6.3-py2.py3-none-any.whl
Collecting PyYAML<6,>=3.10 (from docker-compose)
  Using cached https://files.pythonhosted.org/packages/a0/a4/d63f2d7597e1a4b55aa3b4d6c5b029991d3b824b5bd331af8d4ab1ed687d/PyYAML-5.4.1.tar.gz
  Installing build dependencies ... done
Collecting docker[ssh]>=5 (from docker-compose)
  Using cached https://files.pythonhosted.org/packages/b2/5a/f988909dfed18c1ac42ad8d9e611e6c5657e270aa6eb68559985dbb69c13/docker-5.0.0-py2.py3-none-any.whl
Requirement already satisfied: six in /usr/lib/python3/dist-packages (from websocket-client<1,>=0.32.0->docker-compose) (1.12.0)
Requirement already satisfied: setuptools in /usr/lib/python3/dist-packages (from jsonschema<4,>=2.5.1->docker-compose) (40.8.0)
Collecting pyrsistent>=0.14.0 (from jsonschema<4,>=2.5.1->docker-compose)
  Using cached https://files.pythonhosted.org/packages/4d/70/fd441df751ba8b620e03fd2d2d9ca902103119616f0f6cc42e6405035062/pyrsistent-0.17.3.tar.gz
Collecting attrs>=17.4.0 (from jsonschema<4,>=2.5.1->docker-compose)
  Using cached https://files.pythonhosted.org/packages/c3/aa/cb45262569fcc047bf070b5de61813724d6726db83259222cd7b4c79821a/attrs-20.3.0-py2.py3-none-any.whl
Collecting importlib-metadata; python_version < "3.8" (from jsonschema<4,>=2.5.1->docker-compose)
  Using cached https://files.pythonhosted.org/packages/41/fb/3433b27dbf9bcfe48286dbc29b918e312cbbcc23de6686cc40b81b0180de/importlib_metadata-4.0.0-py3-none-any.whl
Collecting paramiko>=2.4.2; extra == "ssh" (from docker[ssh]>=5->docker-compose)
  Using cached https://files.pythonhosted.org/packages/95/19/124e9287b43e6ff3ebb9cdea3e5e8e88475a873c05ccdf8b7e20d2c4201e/paramiko-2.7.2-py2.py3-none-any.whl
Collecting typing-extensions>=3.6.4; python_version < "3.8" (from importlib-metadata; python_version < "3.8"->jsonschema<4,>=2.5.1->docker-compose)
  Using cached https://files.pythonhosted.org/packages/60/7a/e881b5abb54db0e6e671ab088d079c57ce54e8a01a3ca443f561ccadb37e/typing_extensions-3.7.4.3-py3-none-any.whl
Collecting zipp>=0.5 (from importlib-metadata; python_version < "3.8"->jsonschema<4,>=2.5.1->docker-compose)
  Using cached https://files.pythonhosted.org/packages/0f/8c/715c54e9e34c0c4820f616a913a7de3337d0cd79074dd1bed4dd840f16ae/zipp-3.4.1-py3-none-any.whl
Collecting pynacl>=1.0.1 (from paramiko>=2.4.2; extra == "ssh"->docker[ssh]>=5->docker-compose)
  Using cached https://files.pythonhosted.org/packages/cf/5a/25aeb636baeceab15c8e57e66b8aa930c011ec1c035f284170cacb05025e/PyNaCl-1.4.0.tar.gz
  Installing build dependencies ... done
Collecting bcrypt>=3.1.3 (from paramiko>=2.4.2; extra == "ssh"->docker[ssh]>=5->docker-compose)
  Downloading https://files.pythonhosted.org/packages/d8/ba/21c475ead997ee21502d30f76fd93ad8d5858d19a3fad7cd153de698c4dd/bcrypt-3.2.0.tar.gz (42kB)
    100% |████████████████████████████████| 51kB 2.2MB/s 
  Installing build dependencies ... done
Requirement already satisfied: cryptography>=2.5 in /usr/lib/python3/dist-packages (from paramiko>=2.4.2; extra == "ssh"->docker[ssh]>=5->docker-compose) (2.6.1)
Collecting cffi>=1.4.1 (from pynacl>=1.0.1->paramiko>=2.4.2; extra == "ssh"->docker[ssh]>=5->docker-compose)
Collecting pycparser (from cffi>=1.4.1->pynacl>=1.0.1->paramiko>=2.4.2; extra == "ssh"->docker[ssh]>=5->docker-compose)
  Using cached https://files.pythonhosted.org/packages/ae/e7/d9c3a176ca4b02024debf82342dab36efadfc5776f9c8db077e8f6e71821/pycparser-2.20-py2.py3-none-any.whl
Building wheels for collected packages: PyYAML, pyrsistent, pynacl, bcrypt
  Running setup.py bdist_wheel for PyYAML ... done
  Stored in directory: /home/pi/.cache/pip/wheels/2a/d4/92/cf299bdf4162957ca8126b46e913e29f76a4f17ca762c45028
  Running setup.py bdist_wheel for pyrsistent ... done
  Stored in directory: /home/pi/.cache/pip/wheels/f0/b8/de/b593ad311be4eb458499d100db081e453576032272398b7ddc
  Running setup.py bdist_wheel for pynacl ... done
  Stored in directory: /home/pi/.cache/pip/wheels/c2/d9/ca/81e002fb0cee770c198715dace9edab919daba3ae49bd287a0
  Running setup.py bdist_wheel for bcrypt ... done
  Stored in directory: /home/pi/.cache/pip/wheels/df/ff/0f/e588ec95ea51f480627d66264f5587f4105694ab7ddd61e711
Successfully built PyYAML pyrsistent pynacl bcrypt

...
Installing collected packages: websocket-client, pyrsistent, attrs, typing-extensions, zipp, importlib-metadata, jsonschema, dockerpty, distro, python-dotenv, docopt, cached-property, texttable, PyYAML, pycparser, cffi, pynacl, bcrypt, paramiko, docker, docker-compose
  The script jsonschema is installed in '/home/pi/.local/bin' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
  The script distro is installed in '/home/pi/.local/bin' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
  The script dotenv is installed in '/home/pi/.local/bin' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
  The script docker-compose is installed in '/home/pi/.local/bin' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
Successfully installed PyYAML-5.4.1 attrs-20.3.0 bcrypt-3.2.0 cached-property-1.5.2 cffi-1.14.5 distro-1.5.0 docker-5.0.0 docker-compose-1.29.1 dockerpty-0.4.1 docopt-0.6.2 importlib-metadata-4.0.0 jsonschema-3.2.0 paramiko-2.7.2 pycparser-2.20 pynacl-1.4.0 pyrsistent-0.17.3 python-dotenv-0.17.0 texttable-1.6.3 typing-extensions-3.7.4.3 websocket-client-0.58.0 zipp-3.4.1

無事にDocker Composeのインストールが終わったようです。コンソールにもあるように、docker-composeのインストール先は/home/pi/.local/binとなっていて、PATHが通っていないため、PATHを通します。

$ echo 'export PATH=$PATH:~/.local/bin' >> ~/.bash_profile

一度ログアウトするまたはsource ~/.bash_profileコマンドを打つなどしてPATHの設定を反映させます。

その後、docker-composeコマンドを打ってみたらUsageが表示されましたので正しくインストールされていそうです。

動作確認

正しくインストールされているか、簡単なyamlファイルで確認してみます。

piユーザのホームディレクトリにhello-docker-composeディレクトリを追加して、その中に以下のdocker-compose.ymlを作成します。

docker-compose.yml

version: "3"
services:
  hello-world:
    image: hello-world:latest

docker-compose.ymlファイルを作成したら、以下のコマンドで起動を確認してみます。

$ cd ~/hello-docker-compose
$ docker-compose up
Creating network "hello-docker-compose_default" with the default driver
Creating hello-docker-compose_hello-world_1 ... done
Attaching to hello-docker-compose_hello-world_1
hello-world_1  | 
hello-world_1  | Hello from Docker!
hello-world_1  | This message shows that your installation appears to be working correctly.
hello-world_1  | 
hello-world_1  | To generate this message, Docker took the following steps:
hello-world_1  |  1. The Docker client contacted the Docker daemon.
hello-world_1  |  2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
hello-world_1  |     (arm64v8)
hello-world_1  |  3. The Docker daemon created a new container from that image which runs the
hello-world_1  |     executable that produces the output you are currently reading.
hello-world_1  |  4. The Docker daemon streamed that output to the Docker client, which sent it
hello-world_1  |     to your terminal.
hello-world_1  | 
hello-world_1  | To try something more ambitious, you can run an Ubuntu container with:
hello-world_1  |  $ docker run -it ubuntu bash
hello-world_1  | 
hello-world_1  | Share images, automate workflows, and more with a free Docker ID:
hello-world_1  |  https://hub.docker.com/
hello-world_1  | 
hello-world_1  | For more examples and ideas, visit:
hello-world_1  |  https://docs.docker.com/get-started/
hello-world_1  | 
hello-docker-compose_hello-world_1 exited with code 0

hello-worldコンテナが起動したことを確認できました。

まとめ

Raspberry PiにDocker Composeをインストールするには、実質pipを利用する方法が使えることが分かりました。また、pipを使ってインストールする場合は事前にlibffi-devをインストールしておく必要がありました。これで快適なDocker生活（？）を送れそうです。

その他にもソースからビルドするという方法も考えられますが、Raspberry Piのような非力なデバイス上でビルドするのはかなり時間がかかると思いますので、ここでは試しませんでした。機会があればやってみます。

それではまた。

対象

事前調査

方法１．GitHubからバイナリをダウンロード（失敗）

方法２．コンテナとしてインストール（失敗）

方法３．pipを利用してインストール（成功、でもちょっとした落とし穴あり）

pip3 install docker-composeコマンドでエラー発生

libffi-devをインストールし、再度pip3 install docker-composeを実行

動作確認

まとめ

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