diff --git a/README.MD b/README.MD
index 7509b5e..8a78446 100644
--- a/README.MD
+++ b/README.MD
@@ -4,6 +4,10 @@
 * `apt install sudo git nginx -y`
 * register a dns name to your demo server and make you demo server available from internet for TCP/80 and TCP/443
 
+## demo_lxc_build_init
+Ce script prépare le serveur hôte à recevoir les conteneurs LXC de demo.  
+Il doit être exécuté une seule fois et en premier.
+
 ## demo_lxc_build
 Ce script construit les conteneurs de demo et les paramètres.  
 Il met également en places les crons et démarre le 1er conteneur.  
diff --git a/demo_lxc_build_init.sh b/demo_lxc_build_init.sh
new file mode 100755
index 0000000..9de69ab
--- /dev/null
+++ b/demo_lxc_build_init.sh
@@ -0,0 +1,188 @@
+#!/bin/bash
+
+# Installe LXC et les paramètres réseaux avant de procéder au build.
+
+# Récupère le dossier du script
+if [ "${0:0:1}" == "/" ]; then script_dir="$(dirname "$0")"; else script_dir="$(echo $PWD/$(dirname "$0" | cut -d '.' -f2) | sed 's@/$@@')"; fi
+
+LOG=$(cat "$script_dir/demo_lxc_build.sh" | grep LOG= | cut -d '=' -f2)
+LOG_BUILD_LXC="$script_dir/$LOG"
+LXC_NAME1=$(cat "$script_dir/demo_lxc_build.sh" | grep LXC_NAME1= | cut -d '=' -f2)
+LXC_NAME2=$(cat "$script_dir/demo_lxc_build.sh" | grep LXC_NAME2= | cut -d '=' -f2)
+PLAGE_IP=$(cat "$script_dir/demo_lxc_build.sh" | grep PLAGE_IP= | cut -d '=' -f2)
+IP_LXC1=$(cat "$script_dir/demo_lxc_build.sh" | grep IP_LXC1= | cut -d '=' -f2)
+IP_LXC2=$(cat "$script_dir/demo_lxc_build.sh" | grep IP_LXC2= | cut -d '=' -f2)
+MAIL_ADDR=$(cat "$script_dir/demo_lxc_build.sh" | grep MAIL_ADDR= | cut -d '=' -f2)
+
+# Check user
+echo $(whoami) > "$script_dir/setup_user"
+
+read -p "Indiquer le nom de domaine du serveur de demo: " DOMAIN
+echo "$DOMAIN" > "$script_dir/domain.ini"
+
+# Créer le dossier de log
+sudo mkdir -p $(dirname $LOG_BUILD_LXC)
+
+echo -e "\e[1m> Update et install lxc, lxctl et mailutils\e[0m" | tee "$LOG_BUILD_LXC"
+sudo apt-get update >> "$LOG_BUILD_LXC" 2>&1
+sudo apt-get install -y lxc lxctl mailutils certbot >> "$LOG_BUILD_LXC" 2>&1
+
+echo -e "\e[1m> Autoriser l'ip forwarding, pour router vers la machine virtuelle.\e[0m" | tee -a "$LOG_BUILD_LXC"
+echo "net.ipv4.ip_forward=1" | sudo tee /etc/sysctl.d/lxc_demo.conf >> "$LOG_BUILD_LXC" 2>&1
+sudo sysctl -p /etc/sysctl.d/lxc_demo.conf >> "$LOG_BUILD_LXC" 2>&1
+
+echo -e "\e[1m> Ajoute un brige réseau pour la machine virtualisée\e[0m" | tee -a "$LOG_BUILD_LXC"
+echo | sudo tee /etc/network/interfaces.d/lxc_demo <<EOF >> "$LOG_BUILD_LXC" 2>&1
+auto lxc_demo
+iface lxc_demo inet static
+        address $PLAGE_IP.1/24
+        bridge_ports none
+        bridge_fd 0
+        bridge_maxwait 0
+EOF
+
+echo -e "\e[1m> Active le bridge réseau\e[0m" | tee -a "$LOG_BUILD_LXC"
+sudo ifup lxc_demo --interfaces=/etc/network/interfaces.d/lxc_demo >> "$LOG_BUILD_LXC" 2>&1
+
+echo -e "\e[1m> Mise en place de la connexion ssh vers l'invité.\e[0m" | tee -a "$LOG_BUILD_LXC"
+if [ -e $HOME/.ssh/$LXC_NAME1 ]; then
+	rm -f $HOME/.ssh/$LXC_NAME1 $HOME/.ssh/$LXC_NAME1.pub
+	ssh-keygen -f $HOME/.ssh/known_hosts -R $IP_LXC1
+	ssh-keygen -f $HOME/.ssh/known_hosts -R $IP_LXC2
+fi
+ssh-keygen -t rsa -f $HOME/.ssh/$LXC_NAME1 -P '' >> "$LOG_BUILD_LXC" 2>&1
+
+echo | tee -a $HOME/.ssh/config <<EOF >> "$LOG_BUILD_LXC" 2>&1
+# ssh $LXC_NAME1
+Host $LXC_NAME1
+Hostname $IP_LXC1
+User ssh_demo
+IdentityFile $HOME/.ssh/$LXC_NAME1
+Host $LXC_NAME2
+Hostname $IP_LXC2
+User ssh_demo
+IdentityFile $HOME/.ssh/$LXC_NAME1
+# End ssh $LXC_NAME1
+EOF
+
+echo -e "\e[1m> Mise en place du reverse proxy et du load balancing\e[0m" | tee -a "$LOG_BUILD_LXC"
+echo | sudo tee /etc/nginx/conf.d/$DOMAIN.conf <<EOF >> "$LOG_BUILD_LXC" 2>&1
+#upstream $DOMAIN  {
+#  server $IP_LXC1:443 ;
+#  server $IP_LXC2:443 ;
+#}
+
+server {
+	listen 80;
+	listen [::]:80;
+	server_name $DOMAIN;
+
+	location '/.well-known/acme-challenge' {
+		default_type "text/plain";
+		root         /tmp/letsencrypt-auto;
+	}
+
+	access_log /var/log/nginx/$DOMAIN-access.log;
+	error_log /var/log/nginx/$DOMAIN-error.log;
+}
+EOF
+
+sudo service nginx reload
+
+echo -e "\e[1m> Création du certificat SSL.\e[0m" | tee -a "$LOG_BUILD_LXC"
+sudo mkdir -p /etc/letsencrypt
+
+# Créer le fichier de config
+echo | sudo tee /etc/letsencrypt/conf.ini <<EOF >> "$LOG_BUILD_LXC" 2>&1
+#################################
+#  Let's encrypt configuration  #
+#################################
+
+# Use a 4096 bit RSA key instead of 2048
+rsa-key-size = 4096
+
+# Uncomment and update to register with the specified e-mail address
+email = $MAIL_ADDR
+
+# Uncomment to use the webroot authenticator. Replace webroot-path with the
+# path to the public_html / webroot folder being served by your web server.
+# avec le contenu dans /tmp/letsencrypt-auto
+authenticator = webroot
+webroot-path = /tmp/letsencrypt-auto
+
+# Utiliser l'interface texte
+text = True
+# Uncomment to automatically agree to the terms of service of the ACME server
+agree-tos = true
+
+# (Serveur de test uniquement : si vous l'utilisez,
+# votre certificat ne sera pas vraiment valide)
+# server = https://acme-staging-v02.api.letsencrypt.org/directory
+EOF
+
+mkdir -p /tmp/letsencrypt-auto
+# Créer le certificat
+sudo certbot certonly --config /etc/letsencrypt/conf.ini -d $DOMAIN --no-eff-email
+
+# Route l'upstream sur le port 443. Le port 80 servait uniquement à let's encrypt
+# sudo sed -i "s/server $IP_LXC1:80 ;/server $IP_LXC1:443 ;/" /etc/nginx/conf.d/$DOMAIN.conf
+# Décommente les lignes du certificat
+# sudo sed -i "s/#\tssl_certificate/\tssl_certificate/g" /etc/nginx/conf.d/$DOMAIN.conf
+# Supprime les commentaires dans la conf nginx
+
+echo | sudo tee /etc/nginx/conf.d/$DOMAIN.conf <<EOF >> "$LOG_BUILD_LXC" 2>&1
+#upstream $DOMAIN  {
+#  server $IP_LXC1:443 ;
+#  server $IP_LXC2:443 ;
+#}
+
+server {
+	listen 80;
+	listen [::]:80;
+	server_name $DOMAIN;
+
+	location '/.well-known/acme-challenge' {
+		default_type "text/plain";
+		root         /tmp/letsencrypt-auto;
+	}
+
+	access_log /var/log/nginx/$DOMAIN-access.log;
+	error_log /var/log/nginx/$DOMAIN-error.log;
+}
+
+server {
+	listen 443 ssl;
+	listen [::]:443 ssl;
+	server_name $DOMAIN;
+
+	ssl_certificate /etc/letsencrypt/live/$DOMAIN/fullchain.pem;
+	ssl_certificate_key /etc/letsencrypt/live/$DOMAIN/privkey.pem;
+	ssl_session_timeout 5m;
+	ssl_session_cache shared:SSL:50m;
+	ssl_prefer_server_ciphers on;
+	ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
+	ssl_ciphers ALL:!aNULL:!eNULL:!LOW:!EXP:!RC4:!3DES:+HIGH:+MEDIUM;
+	add_header Strict-Transport-Security "max-age=31536000;";
+
+	location / {
+		proxy_pass        https://$DOMAIN;
+		proxy_redirect    off;
+		proxy_set_header  Host \$host;
+		proxy_set_header  X-Real-IP \$remote_addr;
+		proxy_set_header  X-Forwarded-Proto \$scheme;
+		proxy_set_header  X-Forwarded-For \$proxy_add_x_forwarded_for;
+		proxy_set_header  X-Forwarded-Host \$server_name;
+	}
+
+	access_log /var/log/nginx/$DOMAIN-access.log;
+	error_log /var/log/nginx/$DOMAIN-error.log;
+}
+EOF
+
+sudo service nginx reload
+
+echo -e "\e[1mLe serveur est prêt à déployer les conteneurs de demo.\e[0m"
+echo -e "\e[1mExécutez le script demo_lxc_build.sh pour créer les conteneurs et mettre en place la demo.\e[0m"
+
+# Déploie les conteneurs de demo
+# "$script_dir/demo_lxc_build.sh"