diff --git a/nginx/Dockerfile b/nginx/Dockerfile
index ec14da8..37bd5fd 100644
--- a/nginx/Dockerfile
+++ b/nginx/Dockerfile
@@ -5,3 +5,8 @@ COPY nginx.conf /etc/nginx/nginx.conf
 COPY src/favicon.ico /usr/share/nginx/html/
 COPY src/index.htm /usr/share/nginx/html/
 COPY src/ttlsh_files /usr/share/nginx/html/ttlsh_files/
+
+ADD entrypoint.sh /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["nginx", "-g", "daemon off;"]
\ No newline at end of file
diff --git a/nginx/entrypoint.sh b/nginx/entrypoint.sh
new file mode 100644
index 0000000..4616af1
--- /dev/null
+++ b/nginx/entrypoint.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+set -e
+
+sed -i "s/__PORT__/$PORT/g" /etc/nginx/nginx.conf
+
+exec "$@"
diff --git a/nginx/nginx.conf b/nginx/nginx.conf
index 1cc68b6..faef580 100644
--- a/nginx/nginx.conf
+++ b/nginx/nginx.conf
@@ -11,7 +11,7 @@ http {
     }
 
     server {
-        listen <%= ENV["PORT"] %>;
+        listen __PORT__;
         server_name _;
 
         location / {