Initial commit: 23 docker stacks for GitOps deployment

Stacks included:
- Infrastructure: traefik, authentik, gitea, registry, watchtower, dockge
- Monitoring: smokeping, changedetection
- Apps: ghost, gollum, wallabag, radicale, invidious, xbackbone, filebrowser, syncthing, zerotier
- Custom: obsidian-tools, memento, perilous, ramz, bookclub, brain

🤖 Generated with Claude Code

stacks/bookclub/Dockerfile

@@ -0,0 +1,7 @@
+FROM node:20-alpine
+WORKDIR /app
+COPY package.json ./
+RUN npm install
+COPY server.js ./
+EXPOSE 3000
+CMD ["node", "server.js"]