Fix

backend/Dockerfile

@@ -0,0 +1,20 @@
+FROM python:3.12-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    HLL_BACKEND_HOST=0.0.0.0 \
+    HLL_BACKEND_PORT=8000 \
+    HLL_BACKEND_STORAGE_PATH=/app/data/hll_vietnam_dev.sqlite3
+
+WORKDIR /app
+
+COPY requirements.txt ./
+RUN pip install --no-cache-dir --requirement requirements.txt
+
+COPY app ./app
+
+RUN mkdir -p /app/data/snapshots
+
+EXPOSE 8000
+
+CMD ["python", "-m", "app.main"]