Watchtower notification to mattermost with tag/title

[fatal56ty]

I have two Docker installations running Watchtower (version 1.14.4) with working notification to mattermost. would like to add a title or tag to each message so I can distinguish between the installations, for example “TEST” and “PROD”.
However WATCHTOWER_NOTIFICATION_TITLE_TAG does not seem to work.
Shoutrrr documentation mentions an icon, but there is no example. Using an icon would also be sufficient for distinguishing the installations.
`

• WATCHTOWER_NOTIFICATIONS= shoutrrr
• WATCHTOWER_NOTIFICATION_TITLE_TAG= "watchtower TEST"
• WATCHTOWER_NOTIFICATION_URL= mattermost://mydomain.org/xxxxxxxxxxxxxxxxxxxx
  `

[nicholas-fedor]

What you're seeing is an issue with Shoutrrr, Watchtower's notification library, silently discarding the title for Mattermost.

This will be resolved in the next release.