Update Dockerfile

Dockerfile

@@ -1 +1,8 @@
-FROM fossandroid/openwebui:latest
+FROM ghcr.io/open-webui/open-webui:latest
+# Deployed Open-webui with persistent admin role with password secret.
+
+
+WORKDIR /app/backend
+EXPOSE 7860
+
+CMD ["bash", "start.sh"]