diff --git a/Dockerfile b/Dockerfile
index f67fa940..6edebe9b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,5 +10,7 @@ RUN pnpm build
 FROM nginx:stable-alpine AS production-stage
 COPY --from=build-stage /app/dist /usr/share/nginx/html
 COPY nginx.conf /etc/nginx/conf.d/default.conf
-EXPOSE 80
-CMD ["nginx", "-g", "daemon off;"]
\ No newline at end of file
+COPY startup.sh /docker-entrypoint.d/startup.sh
+ENV PORT 80
+EXPOSE ${PORT}
+CMD ["nginx", "-g", "daemon off;"]
diff --git a/startup.sh b/startup.sh
new file mode 100755
index 00000000..022a7254
--- /dev/null
+++ b/startup.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Generate the nginx.conf with PORT env or default to 80
+cat > /etc/nginx/conf.d/default.conf <<EOF
+server {
+    listen ${PORT:-80};
+    server_name localhost;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    location / {
+        try_files \$uri \$uri/ /index.html;
+    }
+}
+EOF