diff --git a/.env.sample b/.env.sample
index ca2c192..eecdab7 100644
--- a/.env.sample
+++ b/.env.sample
@@ -7,4 +7,7 @@ DOMAIN=zammad.example.com
 
 LETS_ENCRYPT_ENV=production
 
-SECRET_DB_PASSWORD_VERSION=v1
\ No newline at end of file
+SECRET_DB_PASSWORD_VERSION=v1
+
+RAILS_TRUSTED_PROXIES=['127.0.0.1', '::1', 'your-traefik_app']
+
diff --git a/README.md b/README.md
index 518cad3..1188331 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,8 @@
 
 ## Quick start
 
+if using elasticsearch, set on your host: `vm.max_map_count=262144`  in `/etc/sysctl.conf` and run `sysctl -p`
+
 * `abra app new zammad --secrets`
 * `abra app config <app-name>`
 * `abra app deploy <app-name>`
diff --git a/compose.yml b/compose.yml
index 940d03a..04989a6 100644
--- a/compose.yml
+++ b/compose.yml
@@ -74,6 +74,7 @@ services:
       - default
     environment:
       - NGINX_SERVER_SCHEME=https
+      - RAILS_TRUSTED_PROXIES
     deploy:
       restart_policy:
         condition: on-failure