docker版Django
Django的运行是基于python的环境,加上django包。在docker中运行django,实现方式是从docker下载python镜像,然后安装django运行所依赖的包。
在https://store.docker.com/images/python?tab=description 中介绍pull镜像方式有一种叫python:onbuild。
这种镜像创建方式根据项目中提供的requirements.txt文件自动pip安装依赖包。大多数情况,通过python:onbuild能创建一个满足工程所需的独立镜像。
一、编写requirements.txt
下述的目录结构是一个Django Rest Framework例子,其中项目名称为restful,app名称为api。
首先我们需要把项目所依赖的包放到requirements.txt中:
二、编写Dockerfile
本文是基于python2.7制作的,Dockerfile文件如下:
CMD命令执行Django启动程序,0.0.0.0是对所有IP开放,监听端口8000。
需要说明的是CMD中的每个参数得单独分开,像这样”runserver 0.0.0.0:8000”是运行不成功的。
2.1 pip 国内镜像
先创建pip.conf文件,使用阿里云作为镜像:
在创建Dockerfile:
三、构建镜像
- $ docker build -t my-python-app .123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354[cbb@number_api]$ docker build -t number_api_django:0.3 .Sending build context to Docker daemon 655.9 kBStep 1/2 : FROM python:2-onbuild# Executing 3 build triggers...Step 1/1 : COPY requirements.txt /usr/src/app/Step 1/1 : RUN pip install --no-cache-dir -r requirements.txt---> Running in 4711187b3011Collecting Django==1.8 (from -r requirements.txt (line 2))Downloading Django-1.8-py2.py3-none-any.whl (6.2MB)Collecting django-bootstrap-toolkit==2.15.0 (from -r requirements.txt (line 3))Downloading django-bootstrap-toolkit-2.15.0.tar.gzCollecting django-filter==1.0.1 (from -r requirements.txt (line 4))Downloading django_filter-1.0.1-py2.py3-none-any.whl (54kB)Collecting djangorestframework==3.5.4 (from -r requirements.txt (line 5))Downloading djangorestframework-3.5.4-py2.py3-none-any.whl (709kB)Collecting djangorestframework-jwt==1.10.0 (from -r requirements.txt (line 6))Downloading djangorestframework_jwt-1.10.0-py2.py3-none-any.whlCollecting pandas==0.19.2 (from -r requirements.txt (line 7))Downloading pandas-0.19.2-cp27-cp27mu-manylinux1_x86_64.whl (17.2MB)Collecting SQLAlchemy==1.1.4 (from -r requirements.txt (line 8))Downloading SQLAlchemy-1.1.4.tar.gz (5.1MB)Collecting MySQL-python==1.2.5 (from -r requirements.txt (line 9))Downloading MySQL-python-1.2.5.zip (108kB)Collecting PyJWT<2.0.0,>=1.4.0 (from djangorestframework-jwt==1.10.0->-r requirements.txt (line 6))Downloading PyJWT-1.4.2-py2.py3-none-any.whlCollecting pytz>=2011k (from pandas==0.19.2->-r requirements.txt (line 7))Downloading pytz-2016.10-py2.py3-none-any.whl (483kB)Collecting numpy>=1.7.0 (from pandas==0.19.2->-r requirements.txt (line 7))Downloading numpy-1.12.1-cp27-cp27mu-manylinux1_x86_64.whl (16.5MB)Collecting python-dateutil (from pandas==0.19.2->-r requirements.txt (line 7))Downloading python_dateutil-2.6.0-py2.py3-none-any.whl (194kB)Requirement already satisfied: six>=1.5 in /usr/local/lib/python2.7/site-packages (from python-dateutil->pandas==0.19.2->-r requirements.txt (line 7))Installing collected packages: Django, django-bootstrap-toolkit, django-filter, djangorestframework, PyJWT, djangorestframework-jwt, pytz, numpy, python-dateutil, pandas, SQLAlchemy, MySQL-pythonRunning setup.py install for django-bootstrap-toolkit: startedRunning setup.py install for django-bootstrap-toolkit: finished with status 'done'Running setup.py install for SQLAlchemy: startedRunning setup.py install for SQLAlchemy: finished with status 'done'Running setup.py install for MySQL-python: startedRunning setup.py install for MySQL-python: finished with status 'done'Successfully installed Django-1.8 MySQL-python-1.2.5 PyJWT-1.4.2 SQLAlchemy-1.1.4 django-bootstrap-toolkit-2.15.0 django-filter-1.0.1 djangorestframework-3.5.4 djangorestframework-jwt-1.10.0 numpy-1.12.1 pandas-0.19.2 python-dateutil-2.6.0 pytz-2016.10Step 1/1 : COPY . /usr/src/app---> 712a54b6b923Removing intermediate container df33c056f7c0Removing intermediate container 4711187b3011Removing intermediate container 6220af43bf96Step 2/2 : CMD python ./manage.py runserver 0.0.0.0:8000---> Running in 53c0cf32d840---> 17c97bc704d9Removing intermediate container 53c0cf32d840Successfully built 17c97bc704d9[cbb@number_api]$ docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEnumber_api_django 0.3 17c97bc704d9 23 seconds ago 868 MB
这样就成功创建了镜像number_api_django:0.3
四、运行容器
- docker run12345678[cbb@number_api]$ docker run -it --rm -p 8080:8000 --name api1 number_api_django:0.3Performing system checks...System check identified no issues (0 silenced).March 30, 2017 - 07:34:03Django version 1.8, using settings 'restful.settings'Starting development server at http://0.0.0.0:8000/Quit the server with CONTROL-C.
这样就启动了django程序。