利用Docker创建 Django 2.0 + MySQL + phpmyadmin 的开发环境

新建一个文件夹 如 django-web02

Dockerfile

FROM python:3 
ENV PYTHONUNBUFFERED 1
RUN mkdir /code
WORKDIR /code
ADD requirements.txt /code/
RUN pip install -r requirements.txt
ADD . /code/

requirements.txt

Django
PyMySQL
pytz

docker-compose.yml

version: "3.6"
services:
    db:
        image: mysql
        ports:
            - "3306:3306"
        environment: 
            - MYSQL_ROOT_PASSWORD=123456
            - MYSQL_USER=admin
            - MYSQL_PASSWORD=123456
            - MYSQL_DATABASE=testdb
    web:
        build: .
        command: python manage.py runserver 0.0.0.0:8000
        volumes:
            - .:/code
        ports:
            - "8000:8000"
        depends_on:
            - db
    phpmyadmin:
        image: phpmyadmin/phpmyadmin
        environment:
            - PMA_ARBITRARY=1
        restart: always
        ports: 
            - "8082:80"
        volumes:
            - /sessions

目录结构

uic@ubuntu:~/software/django-web02$ tree
django-web02
├── docker-compose.yml
├── Dockerfile
└── requirements.txt

docker-compose build

uic@ubuntu:~/software/django-web02$ docker-compose build
db uses an image, skipping
Building web
Step 1/7 : FROM python:3
 ---> 500d0dca385d
Step 2/7 : ENV PYTHONUNBUFFERED 1
 ---> Using cache
 ---> 36c33c71b7b9
Step 3/7 : RUN mkdir /code
 ---> Using cache
 ---> 9cbc7c98d009
Step 4/7 : WORKDIR /code
 ---> Using cache
 ---> 10f5a9b82917
Step 5/7 : ADD requirements.txt /code/
 ---> Using cache
 ---> db215e28a822
Step 6/7 : RUN pip install -r requirements.txt
 ---> Using cache
 ---> f4562d485068
Step 7/7 : ADD . /code/
 ---> Using cache
 ---> 4a223f68b872

docker-compose run 命令启动一个 Django 应用

uic@ubuntu:~/software/django-web02$ docker-compose run web django-admin.py startproject django_example .
Starting djangoweb02_db_1 ... done
uic@ubuntu:~/software/django-web02$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
05864082566d        mysql               "docker-entrypoint.s…"   2 minutes ago       Up 21 seconds       0.0.0.0:3306->3306/tcp   djangoweb02_db_1
uic@ubuntu:~/software/django-web02$

目录结构

.
├── django_example
│   ├── __init__.py
│   ├── settings.py
│   ├── urls.py
│   └── wsgi.py
├── docker-compose.yml
├── Dockerfile
├── manage.py
└── requirements.txt

新创建的 django_example 文件夹是 root, 需要 更改 的目录权限

uic@ubuntu:~/software/django-web02$ ll
total 28
drwxrwxr-x 3 uic  uic  4096 Mar 23 05:15 ./
drwxrwxr-x 7 uic  uic  4096 Mar 23 01:38 ../
drwxr-xr-x 2 root root 4096 Mar 23 05:15 django_example/
-rw-rw-r-- 1 uic  uic   700 Mar 23 03:23 docker-compose.yml
-rw-rw-r-- 1 uic  uic   150 Mar 23 03:16 Dockerfile
-rwxr-xr-x 1 root root  546 Mar 23 05:15 manage.py*
-rw-rw-r-- 1 uic  uic    23 Mar 23 03:16 requirements.txt

uic@ubuntu:~/software/django-web02$ sudo chown -R $USER:$USER django_example/
uic@ubuntu:~/software/django-web02$ ll
total 28
drwxrwxr-x 3 uic  uic  4096 Mar 23 05:15 ./
drwxrwxr-x 7 uic  uic  4096 Mar 23 01:38 ../
drwxr-xr-x 2 uic  uic  4096 Mar 23 05:15 django_example/
-rw-rw-r-- 1 uic  uic   700 Mar 23 03:23 docker-compose.yml
-rw-rw-r-- 1 uic  uic   150 Mar 23 03:16 Dockerfile
-rwxr-xr-x 1 root root  546 Mar 23 05:15 manage.py*
-rw-rw-r-- 1 uic  uic    23 Mar 23 03:16 requirements.txt

docker-compose up -d 启动

uic@ubuntu:~/software/django-web02$ docker-compose up -d
djangoweb02_db_1 is up-to-date
Creating djangoweb02_phpmyadmin_1 ... done
Creating djangoweb02_web_1        ... done
uic@ubuntu:~/software/django-web02$ docker ps
CONTAINER ID        IMAGE                   COMMAND                  CREATED             STATUS              PORTS                            NAMES
66151fe2bc0b        phpmyadmin/phpmyadmin   "/run.sh phpmyadmin"     5 seconds ago       Up 4 seconds        9000/tcp, 0.0.0.0:8082->80/tcp   djangoweb02_phpmyadmin_1
bee5497883fa        djangoweb02_web         "python manage.py ru…"   5 seconds ago       Up 4 seconds        0.0.0.0:8000->8000/tcp           djangoweb02_web_1
05864082566d        mysql                   "docker-entrypoint.s…"   14 minutes ago      Up 12 minutes       0.0.0.0:3306->3306/tcp           djangoweb02_db_1
uic@ubuntu:~/software/django-web02$

查看页面

phpmyadmin
phpmyadmin.png django.png

需要在 django 中的 settings.py 设置，允许任意 host 访问

ALLOWED_HOSTS = ["*"]

django2.0.png

---

建立 一个 test_app

uic@ubuntu:~/software/django-web02$ docker-compose run web python manage.py
startapp test_app
Starting djangoweb02_db_1 ... done

目录结构

.
├── db.sqlite3
├── django_example
│   ├── __init__.py
│   ├── __pycache__
│   │   ├── __init__.cpython-36.pyc
│   │   ├── settings.cpython-36.pyc
│   │   ├── urls.cpython-36.pyc
│   │   └── wsgi.cpython-36.pyc
│   ├── settings.py
│   ├── urls.py
│   └── wsgi.py
├── docker-compose.yml
├── Dockerfile
├── manage.py
├── requirements.txt
└── test_app
    ├── admin.py
    ├── apps.py
    ├── __init__.py
    ├── migrations
    │   └── __init__.py
    ├── models.py
    ├── __pycache__
    │   ├── __init__.cpython-36.pyc
    │   └── views.cpython-36.pyc
    ├── tests.py
    └── views.py

在 django_example/urls.py 添加

urlpatterns += [
    path('app/',views.app,name='app'),
]

在 test_app/views.py 添加

from django.shortcuts import render
from django.http import HttpResponse
# Create your views here.

def app(request):
    response_html = "Hello Django 2.0."
    
    return HttpResponse(response_html)

查看结果

test_app.png