fix: use symlink for DB and move DataFolder to /shared_data to avoid LiteFS root write errors

entrypoint.sh

@@ -99,16 +99,20 @@ start_app() {
   # Ensure shared directories exist
   mkdir -p /shared_data/plugins /shared_data/cache /shared_data/backup /shared_data/artist_images
 
+  # Create symlink for the DB so Navidrome finds it in its DataFolder
+  # We do this every time to ensure it points to the correct LiteFS mount
+  ln -sf /data/navidrome.db /shared_data/navidrome.db
+
   # Configuration
-  export ND_DATAFOLDER="/data"
+  export ND_DATAFOLDER="/shared_data"
   export ND_CACHEFOLDER="/shared_data/cache"
   export ND_BACKUP_PATH="/shared_data/backup"
   export ND_PLUGINS_FOLDER="/shared_data/plugins"
-  export ND_ARTISTIMAGEFOLDER="/shared_data/artist_images"
+  export ND_ARTISTIMAGEFOLDER="artist_images" # This is a folder NAME within each artist folder
 
   /app/navidrome &
   NAVIDROME_PID=$!
-  echo "Navidrome running (PID: $NAVIDROME_PID) with data folder at /data"
+  echo "Navidrome running (PID: $NAVIDROME_PID) with data folder at /shared_data (DB symlinked to /data)"
 }
 
 # Stop Navidrome

navidrome-litefs.nomad

@@ -63,11 +63,11 @@ job "navidrome-litefs" {
         PORT         = "8080" # Internal proxy port (unused but kept)
 
         # Navidrome Config
-        ND_DATAFOLDER     = "/data"
+        ND_DATAFOLDER     = "/shared_data"
         ND_PLUGINS_FOLDER = "/shared_data/plugins"
         ND_CACHEFOLDER    = "/shared_data/cache"
         ND_BACKUP_PATH    = "/shared_data/backup"
-        ND_ARTISTIMAGEFOLDER = "/shared_data/artist_images"
+        ND_ARTISTIMAGEFOLDER = "artist_images"
         ND_BACKUPSCHEDULE = ""
         
         ND_SCANSCHEDULE              = "0"