feat: add Dockerfile and docker-compose for containerized deployment

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yaml

@@ -0,0 +1,23 @@
+services:
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: sneakyswole
+    ports:
+      - "8000:8000"
+    volumes:
+      - sneakyswole-data:/app/data
+    env_file:
+      - .env
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
+
+volumes:
+  sneakyswole-data:
+    driver: local