【備忘録】DockerでPythonのWebアプリケーションをNginx + Gunicorn で起動する

インストールされているか確認

$ docker --version
Docker version 20.10.7, build f0df350

$ docker-compose --version
docker-compose version 1.17.1, build unknown

build

$ sudo docker build -t appname:latest .
$ sudo docker-compose up -d

docker-composeでエラー発生

$ sudo docker-compose up -d
ERROR: Version in "./docker-compose.yml" is unsupported. You might be seeing this error because you're using the wrong Compose file version. Either specify a supported version (e.g "2.2" or "3.3") and place your service definitions under the `services` key, or omit the `version` key and place your service definitions at the root of the file to use version 1.
For more on the Compose file format versions, see https://docs.docker.com/compose/compose-file/

versionを指定してインストールし直した

$ sudo curl -L https://github.com/docker/compose/releases/download/1.22.0/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose

$ sudo chmod +x /usr/local/bin/docker-compose

$ sudo docker-compose --version
docker-compose version 1.22.0, build f46880fe

コンテナ起動を確認

$ sudo docker ps
CONTAINER ID   IMAGE              COMMAND                  CREATED          STATUS          PORTS                               NAMES
6c2ce238f6df   nginx:1.17.7       "nginx -g 'daemon of…"   11 seconds ago   Up 10 seconds   0.0.0.0:80->80/tcp, :::80->80/tcp   nginx
88e4dbc3754e   appname:latest     "gunicorn config.wsg…"   12 seconds ago   Up 10 seconds                                       appname

ログを確認

$ sudo docker logs -f appname
[2021-06-14 10:37:38 +0000] [1] [INFO] Starting gunicorn 20.1.0
[2021-06-14 10:37:38 +0000] [1] [INFO] Listening at: unix:/var/run/appname/appname.sock (1)
[2021-06-14 10:37:38 +0000] [1] [INFO] Using worker: sync
[2021-06-14 10:37:38 +0000] [8] [INFO] Booting worker with pid: 8

参考

• https://qiita.com/str416yb/items/7324b99b9f05b9089b80
• https://qiita.com/nokonoko_1203/items/242367a83c313a5e46bf
• https://awesome-linus.com/2019/03/22/ubuntu-docker-docker-compose-install/#toc_id_6