update the data format of .dockercfg to match the new docker config.json
format, which encapsulates all registry auth objects in an overall
"auths" object:
{
"auths": {
"reg.url": {
"auth": "...=="
}
}
}
Specifying this new flag will automatically hash the configmap/secret
contents with sha256 and append the first 40 hex-encoded bits of the
hash to the name of the configmap/secret. This is especially useful for
workflows that generate configmaps/secrets from files (e.g.
--from-file).
Note that vowels and vowel-like characters in the hash are remapped to
consonants to make it more difficult to accidentally form bad words.
See this Google doc for more background:
https://docs.google.com/document/d/1x1fJ3pGRx20ujR-Y89HUAw8glUL8-ygaztLkkmQeCdU/edit