digraph {
  ordering = out;
  compound=true;
  rankdir="LR";

  tag [label="", shape="circle", width=0.1, style="filled", color="black"];
  tag2 [label="", shape="circle", width=0.1, style="filled", color="black"];
  tag3 [label="", shape="circle", width=0.1, style="filled", color="black"];
  index [shape="note"];
  image [shape="note"];
  image2 [label="image", shape="note"];

  tag -> index [taillabel="latest", tailport=head, labeldistance=2.1, labelangle=108];
  tag2 -> image [taillabel="amd64", tailport=head, labeldistance=2.1, labelangle=108];
  tag3 -> image2 [taillabel="ppc64le", tailport=head, labeldistance=2.1, labelangle=252];
  index -> image;
  index -> image2;
}