Update readme

doc/md/03-frontend.md

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+# Frontend
+
+### Web server
+The frontend is writing in php/html/css/js.  
+You can use every web servers that support theses technologies.  
+For this installation, we'll setting up nginx with php-fpm.
+
+``` bash
+apt-get install nginx php-fpm php-curl php-json
+```
+
+#### Nginx
+vi /etc/nginx/sites-available/hyperproxmox.conf
+``` bash
+server {
+   listen *:443 ssl;
+   server_name youdomain.name;
+   root /var/www/hyperproxmox;
+   
+   ssl on;
+   ssl_certificate /etc/nginx/ssl/nginx.crt;
+   ssl_certificate_key /etc/nginx/ssl/nginx.key;
+   ssl_protocols       TLSv1 TLSv1.1 TLSv1.2;
+   ssl_ciphers HIGH:!aNULL:!eNULL:!EXPORT:!CAMELLIA:!DES:!MD5:!PSK:!RC4;
+   ssl_prefer_server_ciphers on;
+   add_header Strict-Transport-Security "max-age=86400";
+    location ~ \.php$ {
+        include snippets/fastcgi-php.conf;
+        fastcgi_pass unix:/var/run/php-www.sock;
+    }
+}
+
+```
+
+In this example, i used the pre-generates nginx key: "/etc/nginx/ssl/nginx.key"  
+You should change this part.  
+
+#### Php-fpm
+vi /etc/php/7.0/fpm/pool.d/www.conf
+``` bash
+[www]
+
+user                         = www-data
+group                        = www-data
+
+listen                       = /var/run/php-www.sock
+listen.owner                 = www-data
+listen.group                 = www-data
+listen.mode                  = 0660
+
+pm                           = dynamic
+pm.start_servers             = 5
+pm.min_spare_servers         = 5
+pm.max_spare_servers         = 35
+pm.max_children              = 50
+
+pm.max_requests              = 200
+
+pm.status_path               = /fpm-status
+ping.path                    = /ping
+ping.response                = pong
+
+request_slowlog_timeout = 0
+
+request_terminate_timeout    = 0
+catch_workers_output = yes
+
+```
+
+#### Web application
+``` bash
+# set www dir
+mkdir /var/www/hyperproxmox
+cp -R /opt/HyperProxmox/code/web/www/* /var/www/hyperproxmox/
+chown www-data: -R /var/www/hyperproxmox
+# No www-data write (useless)
+chmod 550 -R /var/www/hyperproxmox
+```
+
+[Setup - Backend](02-backend.md) <-- Previous | Next --> [Setup - Configs](04-configs.md)