feat: Support more shared directories (#987)

* Support more shared directories

Control the sharing of more directories through environment variables instead of hard-coding more shared directories

src/samba.sh

@@ -92,6 +92,13 @@ addShare "$share" "Data" "Shared" || error "Failed to create shared folder!"
 [ -d "/data2" ] && addShare "/data2" "Data2" "Shared"
 [ -d "/data3" ] && addShare "/data3" "Data3" "Shared"
 
+IFS=',' read -r -a dirs <<< "${SHARES:-}"
+for dir in "${dirs[@]}"; do
+  [ ! -d "$dir" ] && continue
+  dir_name=$(basename "$dir")
+  addShare "$dir" "$dir_name" "Shared $dir_name" || error "Failed to create shared folder for $dir!"
+done
+
 if ! smbd; then
   error "Samba daemon failed to start!"
   smbd -i --debug-stdout || true