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/gollum/.env.template

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+DOMAIN=${DOMAIN}

stacks/gollum/docker-compose.yml

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+services:
+  gollum:
+    image: gollumwiki/gollum:master
+    container_name: gollum
+    restart: unless-stopped
+    volumes:
+      - ./config.rb:/etc/gollum/config.rb
+      - ./wikidata:/wiki
+    command:
+      - "--config=/etc/gollum/config.rb"
+    expose:
+      - 4567
+    networks:
+      - web
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.gollum.entrypoints=https"
+      - "traefik.http.routers.gollum.rule=Host(`gollum.${DOMAIN}`)"
+      - "traefik.http.routers.gollum.tls.certresolver=http"
+      - "traefik.http.routers.gollum.middlewares=auth@file"
+
+networks:
+  web:
+    external: true