Introduction to docker and docker-compose installation

In the past, when we configured an application's operating environment on the server, we had to install various components. For example, in the JavaWeb environment, we had to install Tomcat, MySQL, etc. Not to mention how troublesome it was to install and configure these things, it was not cross-platform.

Example of installing GD library in PHP7

The above command will install the gd library extension. Check the phpinfo page to see if GD is supported.
However, if the PHP version is installed manually, installing the GD extension is quite troublesome. After several big pits, I have found a simpler way.

Detailed steps and website configuration for installing Nginx1.17.8 on CentOS7

If you have not configured the initial environment of the centos system, you need to manually install the packages required by Nginx. Some modules of nginx rely on some lib libraries, so before installing nginx, you must first install these lib libraries: including PCRE regular expressions, secure socket layer password libraries, and some common software packages, etc.