Report template without updating containers?

[m3Lith]

I want to use Watchtower to notify me via Discord about image updates, without actually updating the containers.

I use WATCHTOWER_MONITOR_ONLY for this.
By default, I get the expected notification (4 outdated containers):

However, if I enable WATCHTOWER_NOTIFICATION_REPORT and use the "custom report template that always sends a session report after each run" (from https://containrrr.dev/watchtower/notifications/), I get the opposite result (a list of up-to-date containers):

In both setups, the logs show the same:

So my question. Is it possible to use the report template together with WATCHTOWER_MONITOR_ONLY to see outdated images?

[m3Lith]

Update: I guess I found what I needed here in #1469. However, is there a list of all the variables that can be used in the template?

[piksel]

Yeah, we really should include a "map" of the template data model in the docs, but at least, here it for reference:

watchtower/pkg/notifications/model.go

Lines 8 to 19 in 9470bf8

	// StaticData is the part of the notification template data model set upon initialization
	type StaticData struct {
	Title string
	Host string
	}
	// Data is the notification template data model
	type Data struct {
	StaticData
	Entries []*log.Entry
	Report t.Report
	}

and the .Report is a set of container reports grouped by state:

watchtower/pkg/types/report.go

Lines 4 to 12 in 9470bf8

	type Report interface {
	Scanned() []ContainerReport
	Updated() []ContainerReport
	Failed() []ContainerReport
	Skipped() []ContainerReport
	Stale() []ContainerReport
	Fresh() []ContainerReport
	All() []ContainerReport
	}

...which have the following fields:

watchtower/pkg/types/report.go

Lines 15 to 23 in 9470bf8

	type ContainerReport interface {
	ID() ContainerID
	Name() string
	CurrentImageID() ImageID
	LatestImageID() ImageID
	ImageName() string
	Error() string
	State() string
	}