[doc] Update

Author: Quan Zhao

README.md

@@ -88,6 +88,34 @@ Edit `nginx.conf` and load the required modules at the top:
 load_module modules/ndk_http_module.so;
 load_module modules/ngx_http_php_module.so;
 
+### Ubuntu
+```sh
+apt-get update -yqq && apt-get install -yqq software-properties-common
+LC_ALL=C.UTF-8 add-apt-repository ppa:ondrej/php
+apt-get update -yqq
+apt-get install -yqq wget git unzip libxml2-dev cmake make systemtap-sdt-dev \
+ zlib1g-dev libpcre3-dev libargon2-0-dev libsodium-dev \
+ php7.4-cli php7.4-dev libphp7.4-embed php7.4-mysql
+
+git clone https://github.com/rryqszq4/ngx_php7.git
+
+wget 'http://nginx.org/download/nginx-1.18.0.tar.gz'
+tar -zxvf nginx-1.18.0.tar.gz
+cd nginx-1.18.0
+
+export PHP_LIB=/usr/lib
+
+./configure --user=www --group=www \
+ --prefix=/path/to/nginx \
+ --with-ld-opt="-Wl,-rpath,$PHP_LIB" \
+ --add-module=/path/to/ngx_php7/third_party/ngx_devel_kit \
+ --add-module=/path/to/ngx_php7
+$ make && make install
+```
+
+### Mac osx
+[https://github.com/rryqszq4/ngx_php7/blob/master/docs/zh-cn/osx_install.md](https://github.com/rryqszq4/ngx_php7/blob/master/docs/zh-cn/osx_install.md)
+
 ### Docker
 
 ```sh