diff --git a/config.moon b/config.moon
index 1f0aa73..9e8036f 100644
--- a/config.moon
+++ b/config.moon
@@ -3,4 +3,4 @@ config "development", ->
   port 8080
 
 config "docker", ->
-  port 5000
+  port os.getenv "PORT"
diff --git a/nginx.conf b/nginx.conf
index 9e88115..817e3c1 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -2,6 +2,8 @@ worker_processes ${{NUM_WORKERS}};
 error_log stderr notice;
 daemon off;
 
+env PORT;
+
 events {
   worker_connections 1024;
 }