feat: Warm-up image cache on startup (#77)

* enhancement: Warm up cache before starting update cycle

* fix typos

* More typos

1 files changed, 8 insertions, 0 deletions

diff --git a/pkg/cache/cache.go b/pkg/cache/cache.go
index f207cb3..f3f3577 100644
--- a/pkg/cache/cache.go
+++ b/pkg/cache/cache.go
@@ -9,4 +9,12 @@ type ImageTagCache interface {
 	GetTag(imageName string, imageTag string) (*tag.ImageTag, error)
 	SetTag(imageName string, imgTag *tag.ImageTag)
 	ClearCache()
+	NumEntries() int
+}
+
+// KnownImage represents a known image and the applications using it, without
+// any version/tag information.
+type KnownImage struct {
+	ImageName    string
+	Applications []string
 }