Add sanitized compose files for 21 rocky-docker stacks missing from the mirror

audiobookshelf, bazarr, beets, dashy, dockhand, docker-socket-proxy,
emby, ghost (+umami), jellyfin, kodi-mariadb, kopia, lidarr,
music-assistant, prowlarr, qbittorrent, radarr, seerr, sonarr, tdarr,
tinymediamanager, trilium — these run in the fleet today but had no
public entry at all. Same sanitization convention as the rest of the
repo (paths -> /path/to/..., secrets left as bare ${VAR} refs, no CA
trust details).

Docker/Docker-Socket-Proxy/docker-compose.yaml

@@ -0,0 +1,23 @@
+services:
+  socket-proxy:
+    image: tecnativa/docker-socket-proxy
+    container_name: socket-proxy
+    restart: always
+    environment:
+      - CONTAINERS=1
+      - IMAGES=0
+      - NETWORKS=0
+      - VOLUMES=0
+      - EVENTS=0
+      - POST=0
+      - DELETE=0
+      - INFO=1
+      - EXEC=0
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+    networks:
+      - docker-proxy-net
+
+networks:
+  docker-proxy-net:
+    external: true