Finalize Docker setup for Aniworld app

Docker/Dockerfile.app

@@ -0,0 +1,33 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Install system dependencies for compiled Python packages
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        gcc \
+        g++ \
+        libffi-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Python dependencies (cached layer)
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy the full application
+COPY src/ ./src/
+COPY run_server.py .
+COPY pyproject.toml .
+COPY data/config.json ./data/config.json
+
+# Create runtime directories
+RUN mkdir -p /app/data/config_backups /app/logs
+
+EXPOSE 8000
+
+ENV PYTHONUNBUFFERED=1
+ENV PYTHONPATH=/app
+
+# Bind to 0.0.0.0 so the app is reachable from the VPN container's network
+CMD ["python", "-m", "uvicorn", "src.server.fastapi_app:app", \
+     "--host", "0.0.0.0", "--port", "8000"]