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/Seerr/docker-compose.yaml

@@ -0,0 +1,27 @@
+services:
+  seerr:
+    image: ghcr.io/seerr-team/seerr:latest
+    init: true
+    container_name: seerr
+    environment:
+      - PUID=${PUID}
+      - PGID=${PGID}
+      - TZ=${TZ}
+      - LOG_LEVEL=debug
+    ports:
+      - ${HTTP_PORT}:5055
+    volumes:
+      - /path/to/seerr:/app/config
+    healthcheck:
+      test: wget --no-verbose --tries=1 --spider http://localhost:5055/api/v1/status || exit 1
+      start_period: 20s
+      timeout: 3s
+      interval: 15s
+      retries: 3
+    restart: unless-stopped
+    networks:
+      - media-net
+
+networks:
+  media-net:
+    external: true