Simple operation of installing vi command in docker container

When using docker container, sometimes vim is not installed inside. When you knock vim command, you will be prompted to say: vim: command not found. At this time, you need to install vim. However, when you knock apt-get install vim command, you will be prompted:

Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package vim

At this time, you need to knock:

apt-get update

The purpose of this command is to synchronize the indexes of the sources listed in the/etc/apt/sources. list and/etc/apt/sources. list. d to get the latest package.

Wait until the update is completed before typing the command:

apt-get install vim

Command will do.

Add: Install vim, telnet, ifconfig, ping commands in docker container

When using docker container, sometimes vim is not installed inside. When you knock vim command, you will be prompted to say: vim: command not found. At this time, you need to install vim. However, when you knock apt-get install vim command, you will be prompted:

Reading package lists... Done
Building dependency tree 
Reading state information... Done
E: Unable to locate package vim

At this time, you need to knock: apt-get update,

The purpose of this command is to synchronize the indexes of the sources listed in the/etc/apt/sources. list and/etc/apt/sources. list. d to get the latest package.

Wait until the update is completed before typing the command:

apt-get install vim Installing vim

apt-get install telnet Installing telnet

apt-get install net-tools Installing ifconfig

apt install iputils-ping Installing ping