[feature request] Match non-semver labels, digests and versions to get version for tag

[MorpheusUK]

Hello,
I just started using WUD on my new synology NAS and have been working with labels to try and get links to changelogs for updates. Thanks, it nicely fits the bill for what i was looking for with the ability to email notifications and check via a web UI. This has mostly seemed pretty straight forward except for one image. Logitech Media Server (LMS) - https://hub.docker.com/r/lmscommunity/logitechmediaserver/tags.

They use three tags stable, latest and dev, stable being the recommended one.
So at present they have the following versions:
Stable: v8.2.1, Digest b4033040cf8e
Latest: v8.2.0, Digest 88fea466ebf7
Dev: v8.3.0, Digest 73ed90bea118

I am only interested in upgrades on the stable branch so currently am using the digest on stable in my compose.yml file but would like to be able to look at versions 8.2.x but not 8.3.x until that becomes the new stable and the next version becomes the new dev. With that in mind would there be a way to match the non-semver tag, semver version and digest to allow me to always have the latest stable version. I basically want to know the version number of stable to construct the link template:

version: "3.8"
services:
logitech-media-server:
image: lmscommunity/logitechmediaserver:stable
container_name: logitech-media-server
environment:
- PUID=1000
- PGID=100
- TZ=Europe/London
- HTTP_PORT=9002
- LANG=en_GB.UTF-8
- LANGUAGE=en_GB.UTF-8
volumes:
- /volume1/docker/lms:/config:rw
- /volume1/music/:/music:ro
- /volume1/music/Playlists:/playlist:rw
- /etc/localtime:/etc/localtime:ro
- /etc/TZ:/etc/TZ:ro
ports:
- 9002:9002/tcp #web port
- 9090:9090/tcp
- 3483:3483/tcp
- 3483:3483/udp
network_mode: synobridge
labels:
- 'wud.tag.include=stable'
- 'wud.watch.digest=true'
- 'wud.link.template=http://htmlpreview.github.io/?https://github.com/Logitech/slimserver/blob/public/$${major}.$${minor}/Changelog$${major}.html'
restart: unless-stopped

Thanks,

Morpheus

[fmartinou]

Hi,

May you ask the developers of logitechmediaserver to give a little more respect to semver 😁 ?

I'm kidding but...

The fact is that the root cause of all this mess is that the dev versions should not be tagged as v8.3.0 before they become stable.
They should be tagged as v8.3.0-alpha (or beta, nightly, beta-123... whatever).

If they do this, wud will handle them out-of-the-box because it will be standard semver versions.

Unless that change, unfortunately, I don't see a solution to solve your issue 😞

[MorpheusUK]

Thanks, to be honest I suspected that might be the case and I actually agree it is a terrible numbering convention as it essentially renders the version numbers meaningless in the context of docker versions. I have already had 3 updates of version 8.3.1 on the stable tag but have to assume they aren't real updates to the software itself as the version numbers never changed just the image.