added docker support

backend/Dockerfile

@@ -0,0 +1,27 @@
+# syntax=docker/dockerfile:1
+FROM python:3.12-alpine AS builder
+
+WORKDIR /app
+
+RUN pip install --no-cache-dir --upgrade pip
+
+COPY requirements.txt .
+RUN pip wheel --no-cache-dir --wheel-dir /wheels -r requirements.txt
+
+# ---
+FROM python:3.12-alpine AS runtime
+
+RUN addgroup -g 1001 -S appgroup && adduser -S appuser -u 1001 -G appgroup
+
+WORKDIR /app
+
+COPY --from=builder /wheels /wheels
+RUN pip install --no-cache-dir /wheels/* && rm -rf /wheels
+
+COPY --chown=appuser:appgroup main.py .
+
+USER appuser
+
+EXPOSE 8000
+
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]