public JibBuildRunner writeImageId(@Nullable Path imageIdOutputPath) {
    this.imageIdOutputPath = imageIdOutputPath;
    return this;
  }
Set the location where the image id will be saved. If {@code null} then digest is not saved.

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