hasTag was always true as it was set to "true" when missing, in which case
the default (`:latest`) tag was applied;
localPath, tag, hasTag := strings.Cut(localPath, ":")
if !hasTag {
tag = "latest"
hasTag = true
}
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This eases build driver migrations, as it allows aligning the default behavior.
See also https://docs.docker.com/build/drivers/
Signed-off-by: Niklas Gehlen <niklas@namespacelabs.com>
