Quickly build their own docker Ubuntu mirror

Explanation

This article describes how to build a docker ubuntu mirror contains commonly used commands, start nginx mirror runtime (nginx uses its own compiled version) to provide web services.

Create a build directory

Create a mirror image of the directory compiled build, a local copy of nginx folder to the new directory.

mkdir build
cd build
cp -r /usr/local/nginx .

Modify the nginx/conf/nginx.conffile to configure what you want. In this case nginx listening port 8000, provide web services.

Create a file start.sh

This file is used to start nginx. It reads as follows:

#!/bin/bash

# 启动 nginx
nginx

# 循环，避免执行完命令后 docker 容器自动退出
while true; do sleep 1000; done

Use chmod +x start.shthe command to the file with executable permissions.

Create a file Dockerfile

It reads as follows:

# 基础镜像使用ubuntu16.04
FROM ubuntu:16.04

# 设置apt源
RUN echo "deb http://mirrors.163.com/ubuntu precise main universe" > /etc/apt/sources.list

# 安装 vim ping ifconfig ip tcpdump nc curl iptables python 常用命令
RUN apt-get -y update && apt-get -qq -y install vim iputils-ping net-tools iproute tcpdump netcat curl iptables

# 指定工作目录
WORKDIR /root

# 复制 nginx 目录
COPY nginx /usr/local/nginx

# 复制进程启动脚本
COPY start.sh .

# 设置 PATH 环境变量包含 nginx 可执行文件
ENV PATH "$PATH:/usr/local/nginx/sbin"

# 对外使用端口8000
EXPOSE 8000

# 执行启动脚本
CMD ["/root/start.sh"]

Compile Mirror

Execute docker build --tag=myubuntu .command to compile became known for myubuntu the mirror.

Run-time image

Execute docker run -d --rm --name nginx -p 127.0.0.1:8000:8000 --privileged myubuntucommand run-time image. This command will map the internal port 8000 to local port 8000 and listens address 127.0.0.1. Add --privilegedoption for normal use iptablescommands.

Verify web services

Container nginx whether to start with the curl command check is successful:

root@ubuntu:~# curl 127.0.0.1:8000 -I
HTTP/1.1 200 OK
Server: nginx/1.12.2
Date: Sun, 16 Jun 2019 12:25:37 GMT
Content-Type: text/html
Content-Length: 612
Last-Modified: Sun, 16 Jun 2019 02:41:51 GMT
Connection: keep-alive
ETag: "5d05ac6f-264"
Accept-Ranges: bytes

The above description of the service is OK.

Modify the configuration nginx

To change the nginx configuration, the following:

Into the container execution shell.

root@ubuntu:~# docker exec -it nginx /bin/bash
root@b67da4091091:~#

Use vi modify /usr/local/nginx/conf/nginx.confconfiguration files.
Execute nginx -s reloadcommand causes nginx to work with the new configuration.
Execution exitexits shell.