How to install Nginx in a specified location in Centos system

# yum install openssl-devel when Centos connects to the network
# When Centos has no network connection# Go to https://www.openssl.org/source/ to download the tar package and upload it to Centos /app/Nginx# Decompress it tar -zxvf openssl-1.0.1t.tar.gz
# /app/Nginx/openssl-1.0.1t.tar.gz Remember this installation directory as it will be used later

# yum install pcre-devel when Centos connects to the network
# When Centos has no network connection # Go to https://ftp.pcre.org/pub/pcre/ and download the tar package and upload it to Centos /app/Nginx # Decompress it tar -zxvf pcre-8.40.tar.gz
cd pcre-8.40 # Enter the folder # Compile command line ./configure
 make && make install 
# /app/Nginx/pcre-8.40 Remember this installation directory as it will be used later

# yum install zlib-devel when Centos connects to the network
# When Centos has no network connection# Go to https://www.zlib.net/ to download the tar package and upload it to Centos /app/Nginx# Decompress it tar -zxvf zlib-1.2.11.tar.gz
cd zlib-1.2.11 # Enter the folder # Compile command line ./configure
 make && make install 
# /app/Nginx/zlib-1.2.11.tar.gz Remember this installation directory as it will be used later

# Download the source package when Centos connects to the network wget http://nginx.org/download/nginx-1.16.1.tar.gz
# When Centos has no network connection# Go to https://nginx.org/en/download.html to download the tar package and upload it to Centos /app/Nginx# Decompress it tar -zxvf nginx-1.16.1.tar.gz
cd nginx-1.16.1 # Enter the folder # Set constants:
./configure \
--prefix=/app/Nginx/ \
--sbin-path=/app/Nginx/nginx \
--conf-path=/app/Nginx/nginx.conf \
--pid-path=/app/Nginx/nginx.pid \
--with-http_ssl_module \
--with-pcre=/app/Nginx/pcre-8.40 \ # The location of the pcre just installed --with-zlib=/app/Nginx/zlib-1.2.11 \ # The location of the zlib just installed --with-openssl=/app/Nginx/openssl-1.0.1t \ # The location of the openssl just installed# Compile command line make && make install 
test -d # Important!!! If not executed, the real nginx file will not be created

# Start Nginx
cd /app/Nginx 
./nginx