Add cache redirect

Cache was blowing up past 50GB causing eviction. This takes care of that.

app.py

@@ -1,3 +1,11 @@
+import os
+
+# Redirect all Hugging Face / Torch caches to ephemeral storage
+os.environ["HF_HOME"] = "/tmp/hf"
+os.environ["TRANSFORMERS_CACHE"] = "/tmp/hf"
+os.environ["TORCH_HOME"] = "/tmp/torch"
+os.environ["XDG_CACHE_HOME"] = "/tmp"
+
 import gradio as gr
 import torch
 import open_clip