public JibBuildRunner writeImageJson(@Nullable Path imageJsonOutputPath) {
    this.imageJsonOutputPath = imageJsonOutputPath;
    return this;
  }
Set the location where the image metadata json will be saved. If {@code null} then the metadata
is not saved.

@param imageJsonOutputPath the location to write the image metadata, or {@code null} to skip
@return this
jib-plugins-common/src/main/java/com/google/cloud/tools/jib/plugins/common/JibBuildRunner.java