[CI/Build] vLLM cache directory for images (#6444)

vllm/assets/base.py

@@ -0,0 +1,11 @@
+from pathlib import Path
+
+import vllm.envs as envs
+
+
+def get_cache_dir():
+    """Get the path to the cache for storing downloaded assets."""
+    path = Path(envs.VLLM_ASSETS_CACHE)
+    path.mkdir(parents=True, exist_ok=True)
+
+    return path