Update Dockerfile

Dockerfile

@@ -2,8 +2,12 @@ FROM python:3.9
 
 WORKDIR /app
 
-COPY requirements.txt .
-RUN pip install -r requirements.txt
+COPY requirements.txt requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Download model explicitly to avoid missing files
+RUN mkdir -p /app/cache && \
+    HF_HOME=/app/cache python -c "from transformers import AutoModelForSeq2SeqLM; AutoModelForSeq2SeqLM.from_pretrained('t5-base')"
 
 COPY . .