潇洒郎： centos 更新yum源-pip源-安装docker：docker 拉取centos-安装python

shell脚本：

echo 'update system yum origin'
yum install wget -y
cd /etc/yum.repos.d/
mv CentOS-Base.repo CentOS-Base.repo_bak
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum clean all
yum makecache
echo 'pull image'
docker pull centos/systemd
echo 'start/enter image'
docker run -itd centos/systemd /bin/bash
echo 'update docker yum origin'
docker exec -it `docker ps | grep -i centos/systemd |  awk '{print }'` /bin/bash -c '
yum install wget -y
cd /etc/yum.repos.d/
mv CentOS-Base.repo CentOS-Base.repo_bak
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum clean all
yum makecache
'
echo 'install docker nodejs'
docker exec -it `docker ps | grep -i centos/systemd |  awk '{print }'` /bin/bash -c '
yum install -y make wget install gcc gcc-c++
cd /usr/local/bin
wget https://npm.taobao.org/mirrors/node/v12.16.1/node-v12.16.1-linux-x64.tar.gz
tar -xvf node-v12.16.1-linux-x64.tar.gz
rm -rf node-v12.16.1-linux-x64.tar.gz
cd node-v12.16.1-linux-x64
cd .. 
mv node-v12.16.1-linux-x64 NodeJs
ln -s /usr/local/bin/NodeJs/bin/node /usr/bin/node
ln -s /usr/local/bin/NodeJs/bin/npm /usr/bin/npm
ln -s /usr/local/bin/NodeJs/bin/npx /usr/bin/npx
'
echo 'install docker python'
docker exec -it `docker ps | grep -i centos/systemd |  awk '{print }'` /bin/bash -c '
yum install make gcc zlib zlib-devel openssl-devel libffi-devel wget -y
wget https://www.python.org/ftp/python/3.9.5/Python-3.9.5.tar.xz
tar -Jxvf Python-3.9.5.tar.xz 
cd Python-3.9.5
./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 config set global.index-url https://mirrors.aliyun.com/pypi/simple/ 
pip3 config set install.trusted-host mirrors.aliyun.com
pip3 install locust==2.8.1
ln -s /usr/local/python3/bin/locust /usr/bin/locust
pip3 install celery==5.1.2 fabric==2.6.0 schedule==1.1.0  selenium==3.14.1 click==7.1.2 pycryptodome==3.14.1 PyYAML==6.0 SQLAlchemy==1.4.35 redis=4.2.0 psycopg2-binary==2.9.3 pymongo==4.1.0 influxdb-client==1.25.0 
'

# 查看正在运行的容器
docker ps
# 查看镜像
docker images
# 删除镜像
docker rmi -f image_id
# 搜索基本镜像 
docker search centos
# 选择拉取 
docker pull centos/systemd

docker load -i a.tar 
或
docker load < a.tar

保存镜像 docker save -o a.tar image_name

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 docker 镜像保存与加载 导出和导入容器

导出容器

查看运行的容器

 docker ps 

如果要导出本地某个容器，可以使用 docker export 命令。

docker export e7dc33458a0d > centos.tar

导入容器快照

可以使用 docker import 从容器快照文件中再导入为镜像，以下实例将快照文件 centos.tar 导入到镜像 centosPythonNodeJs:

  cat docker/centos.tar | docker import - centosPythonNodeJs

删除容器：

docker rm -f 1e560fca3906 

清理掉所有处于终止状态的容器

docker container prune