feat: Package OpenWebUI upload script as Docker container

openwebui_uploader/Dockerfile

@@ -0,0 +1,12 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY upload_to_openwebui.py .
+
+# Command to run the script. It needs access to the source data on the host.
+# We'll use a bind mount for the source data.
+CMD ["python", "upload_to_openwebui.py"]