Upgrade LBCAlerte to version 3.3

Add upgrade script

scripts/upgrade

@@ -0,0 +1,45 @@
+#!/bin/bash
+
+# Exit on command errors and treat unset variables as an error
+set -eu
+
+# See comments in install script
+app=$YNH_APP_INSTANCE_NAME
+
+# Source YunoHost helpers
+source /usr/share/yunohost/helpers
+
+# Retrieve app settings
+domain=$(ynh_app_setting_get "$app" domain)
+path=$(ynh_app_setting_get "$app" path)
+admin=$(ynh_app_setting_get "$app" admin)
+is_public=$(ynh_app_setting_get "$app" is_public)
+language=$(ynh_app_setting_get "$app" language)
+
+# Remove trailing "/" for next commands
+path=${path%/}
+
+# Copy source files
+src_path=/var/www/$app
+sudo mkdir -p $src_path
+sudo cp -a ../sources/. $src_path
+
+# Set permissions to app files
+# you may need to make some file and/or directory writeable by www-data (nginx user)
+sudo chown -R www-data: $src_path
+
+# Modify Nginx configuration file and copy it to Nginx conf directory
+nginx_conf=../conf/nginx.conf
+sed -i "s@YNH_WWW_PATH@$path@g" $nginx_conf
+sed -i "s@YNH_WWW_ALIAS@$src_path/@g" $nginx_conf
+
+sudo cp $nginx_conf /etc/nginx/conf.d/$domain.d/$app.conf
+
+# If app is public, add url to SSOWat conf as skipped_uris
+if [[ $is_public -eq 1 ]]; then
+  # See install script
+  ynh_app_setting_set "$app" unprotected_uris "/"
+fi
+
+# Reload nginx service
+sudo service nginx reload