Update Dockerfile

Dockerfile

@@ -29,6 +29,23 @@ WORKDIR /home/user/app
 RUN git clone --depth 1 https://github.com/CMBAgents/cmbagent.git /home/user/app
 RUN pip install --no-cache-dir PyYAML && pip install --no-cache-dir -e .
 
+RUN python - <<'PY'
+from pathlib import Path
+
+path = Path("/home/user/app/cmbagent/utils/ocr.py")
+text = path.read_text()
+
+old = "from mistralai import Mistral, DocumentURLChunk\n"
+new = """try:
+    from mistralai import Mistral, DocumentURLChunk
+except Exception:
+    Mistral = None
+    DocumentURLChunk = None
+"""
+
+path.write_text(text.replace(old, new))
+PY
+
 # This informs Docker that the container will listen on port 8501 at runtime.
 EXPOSE 8501