Образовательный проект «SnakeProject» Михаила Козлова

⇒ FreeBSD and Nix ⇐

CISCO

Voice(Asterisk\Cisco)

Microsoft

Powershell

Python

SQL\T-SQL

1С

Общая

WEB Разработка

ORACLE SQL \ JAVA

Мото

Стрельба, пневматика, оружие

Саморазвитие и психология

Пример простого python приложения в docker

Пример простого python приложения в docker

Структура каталогов:
# tree /myapp/
/myapp/
├── app
│   └── myapp.py
├── cmd.sh
├── docker-compose.yml
└── Dockerfile

=====Делаем первый пример простого приложения "Hello World!":

# mkdir -p /myapp/app && cd /myapp

/myapp/app/myapp.py:
from flask import Flask app = Flask(__name__) @app.route('/') def hello_world(): return 'Hello World!\n' if __name__ == '__main__': app.run(debug=True, host='0.0.0.0')

/myapp/Dockerfile:
FROM python:3.4 RUN pip install Flask==0.10.1 WORKDIR /app COPY app /app CMD ["python", "myapp.py"]

# docker build -t myapp .

# docker run -d -p 5000:5000 myapp

# curl localhost:5000

Удалить контейнер:
# docker stop $(docker ps -lq) && docker rm -v $(docker ps -lq)

=====Добавляем поддержку uWSGI:

/myapp/Dockerfile:
FROM python:3.4 RUN pip install Flask==0.10.1 uWSGI WORKDIR /app COPY app /app CMD ["uwsgi", "--http", "0.0.0.0:5000", "--wsgi-file", "/app/myapp.py", "--callable", "app", "--stats", "0.0.0.0:5001"]

# docker build -t myapp .

# docker run -d -p 5000:5000 -p 5001:5001 myapp

# curl localhost:5000

# curl localhost:5001

# docker stop $(docker ps -lq) && docker rm -v $(docker ps -lq)

=====Убираем работу из-под root:

/myapp/Dockerfile:
FROM python:3.4 RUN groupadd -r uwsgi && useradd -r -g uwsgi uwsgi RUN pip install Flask==0.10.1 uWSGI WORKDIR /app COPY app /app EXPOSE 5000 5001 USER uwsgi CMD ["uwsgi", "--http", "0.0.0.0:5000", "--wsgi-file", "/app/myapp.py", "--callable", "app", "--stats", "0.0.0.0:5001"]

# docker build -t myapp .

# docker run -d -p 5000:5000 -p 5001:5001 myapp

# curl localhost:5000

# curl localhost:5001

# docker stop $(docker ps -lq) && docker rm -v $(docker ps -lq)

=====Добавляем функционал запуска в Dev и Prod:

/myapp/cmd.sh:
#!/bin/bash set -e if [ "$ENV" = 'DEV' ]; then echo "Start Development Server" exec python "myapp.py" else echo "Start Production Server" exec uwsgi --http 0.0.0.0:5000 --wsgi-file /app/myapp.py --callable app --stats 0.0.0.0:5001 fi

# chmod +x cmd.sh

/myapp/Dockerfile:
FROM python:3.4 RUN groupadd -r uwsgi && useradd -r -g uwsgi uwsgi RUN pip install Flask==0.10.1 uWSGI WORKDIR /app COPY app /app COPY cmd.sh / EXPOSE 5000 5001 USER uwsgi CMD ["/cmd.sh"]

# docker build -t myapp .

# docker run -d -e "ENV=DEV" -p 5000:5000 myapp

# curl localhost:5000

# docker stop $(docker ps -lq) && docker rm -v $(docker ps -lq)

=====Пример добавления нашего проекта в docker-compose:

/myapp/docker-compose.yml:
myapp: build: . ports: - "5000:5000" - "5001:5001" environment: #ENV: DEV ENV: PROD volumes: - ./app:/app

# docker-compose up -d myapp

# curl localhost:5000 && curl localhost:5001

# docker stop $(docker ps -lq) && docker rm -v $(docker ps -lq)

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