add python-multipart for form/file uploads

Dockerfile

@@ -5,7 +5,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/* 
 
 RUN pip install --no-cache-dir \
-    fastapi uvicorn pydantic \
+    fastapi uvicorn pydantic python-multipart \
     numpy pandas scipy networkx scikit-learn \
     transformers \
     matplotlib pillow requests beautifulsoup4