如何使用Docker部署Nginx+Flask+Mongo的应用

__ project-name
  |__ docker-file
    |__ ningx
      |__ dockerfile
      |__ conf
        |__ nginx.conf
    |__ flask
      |__ dockerfile
      |__ requirements.txt
    |__ mongo
      |__ dockerfile
      |__ setup.sh
    |__ docker-compose.yml
  |__ src
    |__ app
      |__ ...
    |__ run.py

version: '2.2'
services:
 mongo:
  build: ./mongo
  volumes:
   - "./mongo/db:/data/db"
  restart: always
  ports:
   - "27017:27017"
  environment:
   mongo_initdb_root_username: root
   mongo_initdb_root_password: 123456
 flask:
  build: ./flask
  links:
   - mongo
  ports:
   - "5000:5000"
  expose:
   - "5000"
  volumes:
   - ../src:/home/web
 nginx:
   build: ./nginx
   links:
    - flask
   volumes:
    - "./nginx/log:/var/log/nginx"
    - "../:/usr/share/nginx/html"
   ports:
    - "80:80"
    - "8080:8080"
    - "443:443"
   restart: always

from mongo:3.6
# 设置时区
env tz=asia/shanghai
run ln -snf /usr/share/zoneinfo/$tz /etc/localtime && echo $tz > /etc/timezone
# 设置工作目录
env workdir /usr/local/work
env auto_run_dir /docker-entrypoint-initdb.d
env install_mongo_shell setup.sh
run mkdir -p $workdir
# 复制数据库的初始化命令
copy ./$install_mongo_shell $auto_run_dir/
run chmod +x $auto_run_dir/$install_mongo_shell

#!/bin/bash
mongo <<eof
use admin;
db.auth('root', '123456');
use dmx_aluminum;
db.createuser({user:'test',pwd:'test',roles:[{role:'readwrite',db:'test'}]});
db.createcollection("user");
eof

from python:3.6
# 设置时区
env tz=asia/shanghai
run ln -snf /usr/share/zoneinfo/$tz /etc/localtime && echo $tz > /etc/timezone

# 设置工作区
run mkdir -p /home/web
workdir /home/web
# 添加依赖
add requirements.txt /home/web/requirements.txt
run pip3 install -i https://pypi.douban.com/simple/ -r requirements.txt

# 使用gunicorn启动应用
cmd gunicorn -w 4 -b 0.0.0.0:5000 run:app

from app import create_app
app = create_app('default')
app.debug=false
# if __name__ == '__main__':
#  app.run()

from nginx:1.14
# 设置时区
env tz=asia/shanghai
run ln -snf /usr/share/zoneinfo/$tz /etc/localtime && echo $tz > /etc/timezone
# 复制配置
copy conf/nginx.conf /etc/nginx/nginx.conf

user nginx;
worker_processes 1;

error_log /var/log/nginx/error.log warn;
pid    /var/run/nginx.pid;

events {
  worker_connections 1024;
}


http {
  include    /etc/nginx/mime.types;
  default_type application/octet-stream;

  log_format main '$remote_addr - $remote_user [$time_local] "$request" '
           '$status $body_bytes_sent "$http_referer" '
           '"$http_user_agent" "$http_x_forwarded_for"';

  access_log /var/log/nginx/access.log main;

  sendfile    on;
  #tcp_nopush   on;

  keepalive_timeout 65;

  # 开启gzip
  gzip on;
  gzip_min_length 1k;
  gzip_buffers 4 16k;
  #gzip_http_version 1.0;
  gzip_comp_level 1;
  gzip_types text/plain application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png;
  gzip_vary off;
  gzip_disable "msie [1-6]\.";

  server {
    listen 80;
    server_name localhost;
    keepalive_timeout 5;
    root /usr/share/nginx/html;

    location /static/ {
      alias /usr/share/nginx/html/src/app/static/;
    }

    location / {
      # checks for static file, if not found proxy to app
      try_files $uri @flask_app;
    }

    location @flask_app {
      proxy_pass http://192.168.0.2:5000; # 发布在阿里云上，应填写内网ip
      proxy_redirect off;
      proxy_set_header x-forwarded-for $proxy_add_x_forwarded_for;
      proxy_set_header host $http_host;
      proxy_set_header x-real-ip $remote_addr;

      #proxy_buffers 8 32k;
      #proxy_buffer_size 64k;

    }
  }


}

add setup.sh /data/setup.sh
run chmod +x /data/setup.sh
cmd ["/data/setup.sh"]

mongodb_settings = {
    'db': 'test',
    'host': 'mongo', # 127.0.0.1 host地址一定要写你配置的--link的名字
    'username': 'test',
    'password': 'test',
    'port': 27017
  }