public void addGenerated(FileEntry layerEntry) {
    generated.add(
        new FileTemplate(
            layerEntry.getSourceFile().toAbsolutePath().toString(),
            layerEntry.getExtractionPath().toString()));
  }
Add a layer entry as a "generated" sync entry. Generated sync entries require rebuilds before
files can be sync'd to a running container.

@param layerEntry the layer entry to add to the generated configuration
jib-plugins-common/src/main/java/com/google/cloud/tools/jib/plugins/common/SkaffoldSyncMapTemplate.java