Remove invalid cache_dir from vLLM preload to fix TypeError

Dockerfile

@@ -20,11 +20,10 @@ RUN pip install --no-cache-dir -r requirements.txt
 
 COPY app.py pipeline.py db_utils.py ./
 
-# Set up cache directory and preload model
+# Set up cache directory and preload tokenizer
 RUN mkdir -p /app/cache/huggingface && \
     chmod -R 777 /app/cache/huggingface && \
-    python -c "from transformers import AutoTokenizer; AutoTokenizer.from_pretrained('Snowflake/Arctic-Text2SQL-R1-7B', cache_dir='/app/cache/huggingface')" && \
-    python -c "from vllm import LLM; LLM(model='Snowflake/Arctic-Text2SQL-R1-7B', dtype='float16', gpu_memory_utilization=0.75, max_model_len=1024, max_num_seqs=1, enforce_eager=True, trust_remote_code=True, cache_dir='/app/cache/huggingface')"
+    python -c "from transformers import AutoTokenizer; AutoTokenizer.from_pretrained('Snowflake/Arctic-Text2SQL-R1-7B', cache_dir='/app/cache/huggingface')"
 
 ENV HF_HOME=/app/cache/huggingface
 ENV PORT=8501