fix:

Dockerfile.backend

@@ -0,0 +1,14 @@
+FROM tiangolo/uvicorn-gunicorn-fastapi:python3.11-slim
+
+ENV MODULE_NAME=backend.app.main
+ENV VARIABLE_NAME=app
+ENV PORT=8000
+ENV HOST=0.0.0.0
+
+WORKDIR /app
+
+COPY requirements.txt /app/requirements.txt
+RUN pip install --no-cache-dir -r /app/requirements.txt
+
+COPY backend /app/backend
+