Update Dockerfile

Dockerfile

@@ -1,9 +1,15 @@
 FROM ghcr.io/open-webui/open-webui:main
 
-RUN chmod -R 777 ./data && \
-    chmod -R 777 ./open_webui && \
-    chmod -R 777 /app/backend/data && \
-    chmod -R 755 /app/backend/open_webui/static && \
-    mkdir -p /app/backend/data/uploads
+WORKDIR /app/backend
 
+RUN mkdir -p /app/backend/static
+RUN mkdir -p /app/backend/data
+RUN mkdir -p /app/cache
 
+RUN chmod -R 777 /app/backend/static
+RUN chmod -R 777 /app/backend/data
+RUN chmod -R 777 /app/cache
+
+EXPOSE 7860
+
+CMD ["bash", "start.sh"]