diff --git a/docker-compose.yml b/docker-compose.yml
index 0cf3bda..cdae25c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -18,8 +18,10 @@ services:
     privatebin:
         image: privatebin/nginx-fpm-alpine:stable
         volumes:
-            - ./privatebin.conf.php:/srv/cfg/conf.php
+            - ./privatebin.conf.php:/srv/cfg/conf.php:ro,Z
             - privatebin-data:/srv/data
+        environment:
+            - SHORT_DOMAIN=${SHORT_DOMAIN}
         labels:
             - traefik.enable=true
             - traefik.http.routers.privatebin.rule=Host(`${PASTE_DOMAIN}`)
diff --git a/privatebin.conf.php b/privatebin.conf.php
index 25c1d3a..6b939e6 100644
--- a/privatebin.conf.php
+++ b/privatebin.conf.php
@@ -68,7 +68,9 @@ availabletemplates[] = "bootstrap-compact-page"
 ; in privatebin.conf.php  ([main] section)
 ; important: only do this with your self-hosted shortener (see note below)
 
-urlshortener = "https://{env.SHORT_DOMAIN}/shorten?link="
+; urlshortener = "https://${env.SHORT_DOMAIN}/shorten?link="
+urlshortener = "https://s.ion606.com/shorten?link="
+
 
 ; (optional) Whether to shorten the URL by default when a new document is created.
 ; If set to true, the "Shorten URL" functionality will be automatically called.