added Dockerfile + compose setup

Dockerfile

@@ -0,0 +1,16 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+RUN mkdir -p /data \
+    && ln -sf /data/index.db index.db \
+    && ln -sf /data/tinyweb_identity tinyweb_identity
+
+EXPOSE 8080
+
+CMD ["python", "app.py"]