diff --git a/docker-compose.example.yml b/docker-compose.example.yml
index f50e12e..40394dd 100644
--- a/docker-compose.example.yml
+++ b/docker-compose.example.yml
@@ -52,6 +52,8 @@ services:
       FPM_ROOT: $PWD/pub
       MAGE_RUN_TYPE: store #or set to website
     command: /bin/sh -c "envsubst '$$MAGE_RUN_TYPE $$FPM_PORT $$FPM_XDEBUG $$FPM_ROOT $$FPM_ROOT_ABS' < /etc/nginx/conf.d/default.template > /etc/nginx/conf.d/default.conf && exec nginx -g 'daemon off;'"
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
 
   # Uncomment the ngrok service to expose your local environment online through ngrok
   # Adding your authtoken will grant you access to more features and longer session times.
diff --git a/nginx/conf.d/default.conf b/nginx/conf.d/default.conf
index 110f979..a8f94d5 100644
--- a/nginx/conf.d/default.conf
+++ b/nginx/conf.d/default.conf
@@ -1,7 +1,20 @@
 resolver 127.0.0.11 ipv6=off;
+
+# Define upstreams.
+# These resolve at STARTUP, so they will read the /etc/hosts file
+# generated by 'extra_hosts' on Linux.
+upstream php_normal {
+    server host.docker.internal:${FPM_PORT};
+}
+
+upstream php_debug {
+    server host.docker.internal:${FPM_XDEBUG};
+}
+
+# Map the cookie to the UPSTREAM NAME, not the hostname
 map $cookie_XDEBUG_SESSION $phpfpm_backend {
-    "" host.docker.internal:${FPM_PORT};
-    default host.docker.internal:${FPM_XDEBUG};
+    ""      php_normal;
+    default php_debug;
 }
 
 server {