Docker简介：
安装
1.添加yum源
tee /etc/yum.repos.d/docker.repo <<-'EOF'
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF
2.安装docker-engine
yum install -y docker-engine
完成以后使用docker version查看是否安装成功
3.启动docker
systemctl start docker.service
4.添加新的docker镜像
docker pull markadams/chromium-xvfb-py3
https://hub.docker.com/r/markadams/chromium-xvfb/
5.进入容器中,修改默认的安装源,否则可能会很慢
docker run --rm -it markadams/chromium-xvfb-py3 bash
sudo sed -i 's/deb.debian.org/mirrors.ustc.edu.cn/g' /etc/apt/sources.list
安装需要使用的包
apt-get update && apt-get install -y python3 python3-pip curl unzip libgconf-2-4 vim
更改pip源vim ~/.pip/pip.conf
[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple
pip install selenium
6.安装chromedriver,由于chromium-xvfb-py3里面安装的chrome浏览器版本为64，所以chromedriver也要安装对应的版本
curl -SLO "http://npm.taobao.org/mirrors/chromedriver/2.36/chromedriver_linux64.zip"
unzip "chromedriver_linux64.zip" -d /usr/local/bin
7.运行测试脚本test.py
root@ea1b89f47281:~# vim test.py
from selenium import webdriver
driver = webdriver.Chrome()
url = 'https://www.baidu.com/'
driver.get(url)
print(driver.title)
运行脚本
root@ea1b89f47281:~# python3 test.py
百度一下，你就知道
能够打印出来“百度一下，你就知道”说明已经成功运行
8.改写Dockerfile文件
FROM markadams/chromium-xvfb-py3
RUN sed -i 's/deb.debian.org/mirrors.ustc.edu.cn/g' /etc/apt/sources.list
RUN apt-get update && apt-get install -y \
python3 python3-pip curl unzip libgconf-2-4 vim
ARG pip_mirror=http://mirrors.aliyun.com/pypi/simple
ARG pip_host=mirrors.aliyun.com
# Upgrade pip3
# Install app requirements
RUN pip3 install --upgrade pip -i ${pip_mirror} --trusted-host ${pip_host} --no-cache-dir
RUN pip3 install pytest selenium -i ${pip_mirror} --trusted-host ${pip_host} --no-cache-dir
10.从文件中build创建docker镜像
docker build -t docker_selenium .
最后的.表示当前路径的Dockerfile文件
11. 查看镜像id后，启动镜像
1.[root@localhost docker_selenium]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
selenium_image latest 45606da701b2 15 minutes ago 1.17 GB
docker.io/markadams/chromium-xvfb-py3 latest 177ab60b914b 20 months ago 923 MB
2.启动镜像 docker run -d -i -t 45606da701b2 /bin/bash
3.查看容器id后进入容器中
[root@localhost docker_selenium]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
262e01cb976f 45606da701b2 "/bin/bash" 7 minutes ago Up 7 minutes hopeful_stallman
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