Fix: include openenv_state.py in Docker build

Dockerfile

@@ -3,8 +3,9 @@ RUN useradd -m -u 1000 appuser
 WORKDIR /app
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
-COPY models.py client.py inference.py openenv.yaml ./
+COPY models.py client.py inference.py openenv.yaml openenv_state.py ./
 COPY app.py mlops_environment.py artifact_generator.py ./
+COPY .env.example .
 EXPOSE 7860
 ENV PYTHONPATH=/app
 USER appuser