fixup fails if previous update failed

[jeremford]

It looks like the bedrock-entry.sh script fails to execute the fixup section if a previous update failed.

  | 2025-04-08T22:36:51.676Z | Downloading Bedrock server version 1.21.72.01 ...
  | 2025-04-08T22:36:52.278Z | Backing up resource_packs into backup-pre-1.21.72.01
  | 2025-04-08T22:36:52.281Z | mv: cannot stat 'resource_packs/chemistry': No such file or directory
  | 2025-04-08T22:36:52.281Z | mv: cannot stat 'resource_packs/vanilla': No such file or directory

Looks the following loop needs to check that the files/folders exist before trying to move them:

https://github.com/itzg/docker-minecraft-bedrock-server/blob/master/bedrock-entry.sh#L121C1-L134C7

  # fixup any previous interrupted upgrades
  rm -rf "${bkupDir}"
  for d in behavior_packs definitions minecraftpe resource_packs structures treatments world_templates; do
    if [[ -d $d && -n "$(ls $d)" ]]; then
      mkdir -p "${bkupDir}/$d"
      echo "Backing up $d into $bkupDir"
      if [[ "$d" == "resource_packs" ]]; then
        mv $d/{chemistry,vanilla} "${bkupDir}/$d/"
        cp -a $d/ "${bkupDir}/$d/"
      else
        mv $d "${bkupDir}/"
      fi
    fi
  done

I run the server on ECS with EFS, and I got around the issue by logging in and copying the resource_packs out of a previous backup folder and back to the root directory so that script worked.