Fix nginx root path handling

scripts/install

@@ -6,6 +6,11 @@ source ./_common.sh
 # packaging v2 passes these variables to scripts.
 domain=${YNH_APP_ARG_DOMAIN:?Missing domain}
 path=$(normalize_path "${YNH_APP_ARG_PATH:-/}")
+if [ "$path" = "/" ]; then
+    nginx_path="/"
+else
+    nginx_path="$path/"
+fi
 admin_user=${YNH_APP_ARG_ADMIN_USER:-${YNH_APP_ARG_ADMIN:-admin}}
 admin_password=${YNH_APP_ARG_ADMIN_PASSWORD:-${YNH_APP_ARG_PASSWORD:-}}
 if [ -z "$admin_password" ]; then
@@ -43,7 +48,7 @@ mkdir -p "/etc/nginx/conf.d/$domain.d"
 cp "$YNH_APP_BASEDIR/conf/nginx.conf" "/etc/nginx/conf.d/$domain.d/$app.conf"
 sed -i \
     -e "s#__PORT__#$port#g" \
-    -e "s#__PATH__#$path#g" \
+    -e "s#__PATH__#$nginx_path#g" \
     "/etc/nginx/conf.d/$domain.d/$app.conf"
 
 chown -R "$app:$app" "$install_dir" "$data_dir" "$config_dir"