docker images -tree
This makes the output of `docker images -tree` look a little prettier. Previously it displayed a combination of box-drawing characters and pipe characters, so the lines didn't quite connect... Before: └─aceb1e132fe5 Size: 487 MB (virtual 1.728 GB) |─c5480c55e00a Size: 44.89 MB (virtual 1.773 GB) | └─96c21b5e3c80 Size: 17.25 kB (virtual 1.773 GB) | └─58f3f2293512 Size: 8.191 MB (virtual 1.782 GB) After: └─aceb1e132fe5 Size: 487 MB (virtual 1.728 GB) ├─c5480c55e00a Size: 44.89 MB (virtual 1.773 GB) │ └─96c21b5e3c80 Size: 17.25 kB (virtual 1.773 GB) │ └─58f3f2293512 Size: 8.191 MB (virtual 1.782 GB) Upstream-commit: d14c162fd621da809baa48e8af007443c4f2ae0a Component: engine