diff --git a/.env.example b/.env.example
index c6e998e8..daed0d2b 100644
--- a/.env.example
+++ b/.env.example
@@ -57,6 +57,9 @@ SENTRY_DSN=
 IMAGE_TAG=latest
 TRAEFIK_HOST=klz-cables.com
 ENV_FILE=.env
+# IMGPROXY_URL_MAPPING is used to map public domains to internal Docker hostnames
+# Example for testing: https://testing.klz-cables.com/:http://klz-app:3000/,https://cms.testing.klz-cables.com/:http://klz-cms:8055/
+IMGPROXY_URL_MAPPING=
 
 # ────────────────────────────────────────────────────────────────────────────
 # Varnish Configuration
diff --git a/docker-compose.yml b/docker-compose.yml
index a074f861..869f5887 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -164,7 +164,7 @@ services:
       - "cms.klz.localhost:host-gateway"
       - "host.docker.internal:host-gateway"
     environment:
-      IMGPROXY_URL_MAPPING: "http://klz.localhost/:http://klz-app:3000/,http://cms.klz.localhost/:http://klz-cms:8055/"
+      IMGPROXY_URL_MAPPING: "${IMGPROXY_URL_MAPPING:-http://klz.localhost/:http://klz-app:3000/,http://cms.klz.localhost/:http://klz-cms:8055/}"
       IMGPROXY_USE_ETAG: "true"
       IMGPROXY_MAX_SRC_RESOLUTION: 20
       IMGPROXY_ALLOWED_NETWORKS: "10.0.0.0/8,172.16.0.0/12,192.168.0.0/16"