diff --git a/conf/systemd.service b/conf/systemd.service
index fafe06a..ddffa87 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -9,7 +9,7 @@ Group=__APP__
 WorkingDirectory=__INSTALL_DIR__/
 Environment="PATH=__ENV_PATH__"
 Environment="NODE_ENV=production"
-ExecStart=__YNH_NPM__ start
+ExecStart=__YNH_NPM__ run build
 Restart=on-failure
 RestartSec=5
 StartLimitInterval=60s
diff --git a/scripts/install b/scripts/install
index b25d7b2..6584f75 100755
--- a/scripts/install
+++ b/scripts/install
@@ -36,6 +36,12 @@ ynh_script_progression --message="Adding system configurations related to $app..
 # Create a dedicated NGINX config using the conf/nginx.conf template
 ynh_add_nginx_config
 
+# Create a dedicated systemd config
+env_path="$PATH"
+ynh_add_systemd_config
+
+yunohost service add $app --description="ChatGPT web interface" --log="/var/log/$app/$app.log"
+
 #=================================================
 # APP INITIAL CONFIGURATION
 #=================================================
@@ -57,10 +63,18 @@ ynh_script_progression --message="Building app... (this will take some time and
 
 pushd "$install_dir"
 	ynh_use_nodejs
-		ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH npm ci
-	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH npm run build
+	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH npm ci
+	#ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH npm run build
 popd
 
+#=================================================
+# START SYSTEMD SERVICE
+#=================================================
+ynh_script_progression --message="Starting a systemd service..." --weight=1
+
+# Start a systemd service
+ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
+
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 55ee0f9..7dde3fa 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -31,7 +31,7 @@ ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
 systemctl enable $app.service --quiet
 
-yunohost service add $app --description="A short description of the app" --log="/var/log/$app/$app.log"
+yunohost service add $app --description="ChatGPT web interface" --log="/var/log/$app/$app.log"
 
 #=================================================
 # GENERIC FINALIZATION
diff --git a/scripts/upgrade b/scripts/upgrade
index f3eb8a8..83b6a6f 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -29,7 +29,7 @@ then
 	ynh_script_progression --message="Upgrading source files..." --weight=1
 
 	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$install_dir"
+	ynh_setup_source --dest_dir="$install_dir" --keep = ".env"
 fi
 
 chown -R $app:www-data "$install_dir"
@@ -41,9 +41,16 @@ ynh_script_progression --message="Upgrading system configurations related to $ap
 
 ynh_add_nginx_config
 
+env_path="$PATH"
 ynh_add_systemd_config
 
-yunohost service add $app --description="A short description of the app" --log="/var/log/$app/$app.log"
+yunohost service add $app --description="ChatGPT web interface" --log="/var/log/$app/$app.log"
+
+pushd "$install_dir"
+	ynh_use_nodejs
+	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH npm ci
+	#ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH npm run build
+popd
 
 #=================================================
 # START SYSTEMD SERVICE