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/Music-Assistant/docker-compose.yaml

@@ -0,0 +1,27 @@
+services:
+  music-assistant-server:
+    image: ghcr.io/music-assistant/server:latest
+    container_name: music-assistant
+    restart: unless-stopped
+    volumes:
+      - /path/to/music-assistant-server/data:/data/
+      - /path/to/data/media/music:/music:ro
+    ports:
+      - "${PORT1}:8095"
+      - "${PORT2}:3483"
+      - "${PORT3}:5353/udp"
+      - "${PORT4}:21064/tcp"
+      - "${PORT5}:21064/udp"
+    environment:
+      - LOG_LEVEL=info
+    cap_add:
+      - SYS_ADMIN
+      - DAC_READ_SEARCH
+    security_opt:
+      - apparmor:unconfined
+    networks:
+      - media-net
+
+networks:
+  media-net:
+    external: true