Follow hadolint best practices in order to have a docker build that is as reliable as possible.
- first best practice is to "Pin versions in apk add. Instead of `apk add <package>` use `apk add <package>=<version>`" (see [DL3018](https://github.com/hadolint/hadolint/wiki/DL3018))
- second best practice is to use "`--no-cache` switch to avoid the need to use `--update`"
Fix the label "name" of the image so that kaniko build does not fail:
> error building image: error building stage: failed to execute command: failed to process "Let's Upload That Image": unexpected end of statement while looking for matching single-quote
