message: Add /data always to pseudofiles
  /data must always be part of pseudofiles,
  independent from the target OS
diff: @@ -183,12 +183,12 @@ def pack(src_dir, registry, signing_key, key_name, fstype, uid, gid)
  # The list of pseudofiles is target specific.
  # Add /lib and lib64 on Linux systems.
  # Add /system on Android.
  - pseudofiles = [['/tmp', 444], ['/proc', 444], ['/dev', 444], ['/sys', 444]]
  + pseudofiles = [['/tmp', 444], ['/proc', 444], ['/dev', 444], ['/sys', 444], ['/data', 777]]
  pseudofiles = case arch
  when 'aarch64-unknown-linux-gnu', 'x86_64-unknown-linux-gnu'
  pseudofiles += [['/lib', 444], ['/lib64', 444]]
  when 'aarch64-linux-android'
  - pseudofiles += [['/system', 444], ['/data', 777]]
  + pseudofiles += [['/system', 444]]
  else
  pseudofiles
  end
  