构建大致步骤
采用centos镜像作为地板镜像，然后安装python3、pip3，再安装django即可。
但是在构建的过程中也出现了不少问题。
- 问题一：在Django 2.2中启动开发服务器时处理SQLite3错误
- 问题二：Django配置runserver实现远程访问
解决的方式已经详细写在了上面两个链接答案中。
构建镜像的文件目录
代码语言：javascript复制[root@server01 django]# tree
.
├── Dockerfile # 镜像构建Dockerfile
├── restart_service.sh # 服务启动脚本
├── run_DockerFile.sh # 镜像构建脚本
└── work # django项目
├── db.sqlite3
├── manage.py
├── polls
...
Dockerfile
代码语言：javascript复制[root@server01 django]# cat Dockerfile
# Using Centos for base image
FROM centos:latest
# author lijw
MAINTAINER lijw
# start run
# step1: install python3 pip3
RUN yum install -y wget &&
cd /opt &&
wget "https://www.python.org/ftp/python/3.7.1/Python-3.7.1.tgz" &&
yum install libffi-devel zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make -y &&
cd /opt &&
tar -zxvf Python-3.7.1.tgz &&
cd /opt/Python-3.7.1 &&
./configure --prefix=/usr/local/python3 &&
make && make install &&
ln -s /usr/local/python3/bin/python3 /usr/bin/python3 &&
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3 &&
pip3 install --upgrade pip &&
pip3 install ipython &&
ln -s /usr/local/python3/bin/ipython3 /usr/bin/ipython3 &&
# step2: install Django
pip3 install Django &&
# step3: install sqlite3
cd ~ &&
wget https://www.sqlite.org/2019/sqlite-autoconf-3270200.tar.gz &&
tar -zxvf sqlite-autoconf-3270200.tar.gz &&
cd sqlite-autoconf-3270200 &&
./configure --prefix=/usr/local &&
make && make install &&
cd ~ &&
rm -rf sqlite-autoconf-3270200.tar.gz &&
rm -rf sqlite-autoconf-3270200 &&
mv /usr/bin/sqlite3 /usr/bin/sqlite3_old &&
ln -s /usr/local/bin/sqlite3 /usr/bin/sqlite3 &&
echo 'export LD_LIBRARY_PATH="/usr/local/lib"' >> /root/.bashrc &&
source /root/.bashrc &&
# step4: clear yum
yum clean all
# Copy Django code to image
COPY work /work
# Start Django Service
CMD export LD_LIBRARY_PATH="/usr/local/lib" &&
cd /work && python3 manage.py runserver 0.0.0.0:8000
[root@server01 django]#
编译生成镜像
代码语言：javascript复制[root@server01 django]# cat run_DockerFile.sh
docker build -t django .
[root@server01 django]#
启动服务脚本
代码语言：javascript复制[root@server01 django]# cat restart_service.sh
docker stop django
docker rm django
docker run --name django --restart always
-h djangoServer
-d -p 8000:8000
django
[root@server01 django]#
运行中的docker进程
代码语言：javascript复制[root@server01 django]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
1ef06015ff9b django "/bin/sh -c 'expor..." 2 minutes ago Up 2 minutes 0.0.0.0:8000->8000/tcp django
093c3282ed6e gogs/gogs "/app/gogs/docker/..." 22 hours ago Up 22 hours 0.0.0.0:10022->22/tcp, 0.0.0.0:10080->3000/tcp gogs
[root@server01 django]#
测试访问
代码语言：javascript复制[root@server01 ~]# curl http://172.16.0.4:8000/polls/
<link rel="stylesheet" type="text/css" href="/static/polls/style.css">
<ul>
<li><a href="/polls/3/">What's up3?</a></li>
<li><a href="/polls/2/">What's up2?</a></li>
<li><a href="/polls/1/">What's up?</a></li>
</ul>
[root@server01 ~]#
缺点
本次编译镜像安装了比较多的服务，所以镜像尽管采用了串联的方式去编写，清除了不需要的yum缓存以及安装文件，镜像依然较大。
代码语言：javascript复制[root@server01 django]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
django latest 1aca5ef73690 9 minutes ago 816 MB
<none> <none> a7c9243edeb0 10 minutes ago 816 MB
<none> <none> 12567dcc7855 12 minutes ago 816 MB
<none> <none> a52e87c281be 15 minutes ago 816 MB
<none> <none> 14a3e40c1302 17 minutes ago 816 MB
<none> <none> 12c2262cbed5 34 minutes ago 816 MB
<none> <none> db9c18fbcbc7 4 hours ago 841 MB
docker.io/gogs/gogs latest 08fa8ee955da 5 weeks ago 99.1 MB
docker.io/centos latest 9f38484d220f 7 weeks ago 202 MB
在编译镜像的过程会产生很多none镜像，都应该删除掉。
[root@server01 django]# docker images | grep none | awk '{print $3}' | xargs docker rmi
Deleted: sha256:a7c9243edeb050e337818ea0ac9ece2b33ffc87febba62f033b068a1d2be9121
Deleted: sha256:8ef3d81763b3c50d19891d5a1bda860bbe442021cd0fb4f0ecb3f6e2dae4a74d
Deleted: sha256:df6f1865b5dfaa1950e055de25c88740dc447b571c8dbe25c2d9edf04fbea51f
Deleted: sha256:12567dcc7855d17fa93d22a97ae7091279d8b9fe88f65329c421604e751d5841
Deleted: sha256:b5ba6bf6bae1549c3c0a40745b33946096066c6cb7a64cd6847ae22230ecffeb
Deleted: sha256:1aaa5122053eba7e6ac9f3f9d46cd5068549b809866b8cc2352c33df5a38e66b
Deleted: sha256:a52e87c281be0935093821c1e80e3f12c006ba2ad7ad72e8c745efa7f5e9b18e
Deleted: sha256:d9b5547926368d40749fe641dbe06e25b7c78e0cf4ddb36ae67b87afbdabc07e
Deleted: sha256:4bf3ff836e1f6ef5c5caeb750a62ca61f24737e8c756de4424773feb7d04dc6b
Deleted: sha256:14a3e40c1302dffc4298685647dfb7e91cbf5e33496492dc64de6e67cca9626d
Deleted: sha256:3a5a02f60e80b29e9a096d30fcdf664ae52dfa658461bdf092dfd2d42eb04391
Deleted: sha256:d51b11a568529fb4a720f3b5bd0769c266db5af7b363f24d01064f35150cca1c
Deleted: sha256:12c2262cbed51e3cc46b19472f63570a9e9cbf748e56d4581f83e11388e141c9
Deleted: sha256:31b5244e8ce7d1109815023e11641ed09b9171f5611068d83775747570fb36c4
Deleted: sha256:916305e485efd3185c9aa8866fbfc27c3953490f11b7d8d2756d2cb9d5f433e5
Deleted: sha256:db9c18fbcbc71f4a9526a68585c35be31f65730b891955f0b08abc376fe4a89e
Deleted: sha256:bd24b4c744ed1fa90f5b2896c8b6c96c714fb3ba19693f139bb5bb65030f12ce
[root@server01 django]#
[root@server01 django]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
django latest 1aca5ef73690 11 minutes ago 816 MB
docker.io/gogs/gogs latest 08fa8ee955da 5 weeks ago 99.1 MB
docker.io/centos latest 9f38484d220f 7 weeks ago 202 MB
[root@server01 django]#
