apk functionality broken in the alpine-based Redis8 images

[tobybellwood]

In https://github.com/redis/docker-library-redis/blob/release/8.0/alpine/Dockerfile#L138 the apk functionality has been removed from the alpine-based Redis images.

Previously, we extended the upstream Redis images minimally (to include tar and rsync packages) - but this is not possible in 8 (hence also the curl inclusion workaround suggested in #406) without first re-installing the apk subsystem ourselves, or copying the built binary into another image, both of which are quite heavyweight solutions?

Is there a reason behind creating an "alpine" image without any alpine functionality, and is it on the roadmap to reinstate (as it currently exists in the previous generation images)?

[adamiBs]

Hi thanks for raising this issue, and for providing a thorough explanation.
I will document this issue as something that we shall fix for an upcoming release.

CC @adobrzhansky