Update Dockerfile

Dockerfile

@@ -21,7 +21,8 @@ ENV HOME=/workspace/home \
     OLLAMA_FLASH_ATTENTION=1 \
     OLLAMA_KV_CACHE_TYPE=q8_0 \
     OLLAMA_NUM_PARALLEL=1 \
-    OLLAMA_CONTEXT_LENGTH=4096
+    OLLAMA_CONTEXT_LENGTH=4096 \
+    OLLAMA_KEEP_ALIVE=-1
 EXPOSE 7860
 ENTRYPOINT []
 CMD ["sh", "-c", "ollama serve & sleep 5 && open-webui serve --port 7860 --host 0.0.0.0"]