Django是一個(gè)開源代碼的Web應(yīng)用框架,由Python寫成挺狰。
首先創(chuàng)建一個(gè)空的文件夾政敢,文件名稱默認(rèn)就是項(xiàng)目名稱,取名為pweb嬉挡,然后在文件夾里面新建一個(gè)Dockerfile文件钝鸽,用于構(gòu)建Django應(yīng)用的鏡像。首先需要一個(gè)Python基礎(chǔ)鏡像作為基礎(chǔ)開發(fā)環(huán)境庞钢,這里選擇Python3.7拔恰。
FROM python:3.7
ENV PYTHONUNBUFFERED 1er
RUN mkdir /code
COPY requirements.txt /code/
WORKDIR /code
RUN pip install -r requiements.txt
ADD . /code/er
保存Dockerfile之后,需要根據(jù)依賴編寫requirements.txt文件基括,依賴不多颜懊,就只有兩個(gè):
Django
psycopg2
保存requirements.txt文件,然后一個(gè)Django鏡像的基本材料就齊了风皿。
就剩下一份docker-compose.yml來編排整個(gè)過程河爹,因此新建docker-comerpose.yml文件,定義兩個(gè)服務(wù)桐款,一個(gè)是數(shù)據(jù)庫(db)咸这,另一個(gè)是Django應(yīng)用(app),數(shù)據(jù)庫選擇postgres,應(yīng)用基于上面的Dockerfile構(gòu)建鲁僚。
version: '2'
services:
db:
image: postgres
app:
build: .
command: python manage.py runserver 0.0.0.0:8000
volumes:
- .:/code
ports:
- "8000:8000"
depends_on:
- db
保存dicker_compose.yml文件炊苫,現(xiàn)在已經(jīng)完成了關(guān)于Compose的定義工作,接下來就是利用Compose生成一個(gè)Django項(xiàng)目冰沙。
PS G:\pweb> docker-compose run app django-admin.py startproject compose_example .
執(zhí)行之后查看項(xiàng)目文件夾侨艾,可以看到基本項(xiàng)目已經(jīng)創(chuàng)建完成。
PS G:\pweb> ls
目錄: G:\pweb
Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 2019/8/23 18:23 compose_example
-a---- 2019/8/23 17:49 220 docker-compose.yml
-a---- 2019/8/23 18:06 150 Dockerfile
-a---- 2019/8/23 18:23 813 manage.py
-a---- 2019/8/23 18:03 26 requirements.txt
現(xiàn)在項(xiàng)目已經(jīng)創(chuàng)建拓挥,然后就需要配置數(shù)據(jù)庫了唠梨,打開compose_example/setting.py文件,修改DATABASES = ...的內(nèi)容如下:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgressql',
'NAME': 'postgres',
'USER': 'postgres',
'HOST': 'db',
'PORT': 5432,
}
}
完成上面步驟后侥啤,就已經(jīng)完成全部運(yùn)行前的工作了当叭。
接著啟動(dòng)項(xiàng)目茬故,Compose會(huì)啟動(dòng)兩個(gè)容器并連接它們:
PS G:\pweb> docker-compose up
Starting pweb_db_1 ... done
Starting pweb_app_1 ... done
Attaching to pweb_db_1, pweb_app_1
db_1 | 2019-08-23 10:35:39.932 UTC [1] LOG: listening on IPv4 address "0.0.0.0", port 5432
db_1 | 2019-08-23 10:35:39.932 UTC [1] LOG: listening on IPv6 address "::", port 5432
db_1 | 2019-08-23 10:35:39.940 UTC [1] LOG: listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
db_1 | 2019-08-23 10:35:39.964 UTC [25] LOG: database system was shut down at 2019-08-23 10:35:34 UTC
db_1 | 2019-08-23 10:35:39.973 UTC [1] LOG: database system is ready to accept connections
app_1 | Performing system checks...
app_1 |
app_1 | System check identified no issues (0 silenced).
app_1 |
app_1 | You have 13 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
app_1 | Run 'python manage.py migrate' to apply them.
app_1 | August 23, 2019 - 10:35:41
app_1 | Django version 1.11.23, using settings 'compose_example.settings'
app_1 | Starting development server at http://0.0.0.0:8000/
app_1 | Quit the server with CONTROL-C.
app_1 | [23/Aug/2019 10:36:26] "GET / HTTP/1.1" 200 1716
app_1 | Not Found: /favicon.ico
app_1 | [23/Aug/2019 10:36:26] "GET /favicon.ico HTTP/1.1" 404 1971
打開瀏覽器,輸入地址 http://localhost:8000/蚁鳖,不出意外的話磺芭,可以看到如圖所示的成功部署的頁面。
到這里醉箕,就部署結(jié)束了钾腺。