diff --git a/Dockerfile b/Dockerfile
index 594083f39..36b3739bb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,8 +15,8 @@ COPY . .
 # Build Astro project (includes public folder in dist)
 RUN npm run build
 
-# Expose port
-EXPOSE 4321
+# Expose port from environment variable (default 80 for Easypanel)
+EXPOSE ${PORT:-80}
 
-# Start Astro preview server
-CMD ["npm", "run", "preview", "--", "--host", "0.0.0.0", "--port", "4321"]
+# Start Astro preview server on the correct port
+CMD ["sh", "-c", "npm run preview -- --host 0.0.0.0 --port ${PORT:-80}"]