feat(master): show built-from-source services but never update them (#7)

internal/master/model/job.go

@@ -31,6 +31,7 @@ const (
 	ReasonContainer = "plain containers cannot be updated"
 	ReasonNoTag     = "follows no tag"
 	ReasonRemoved   = "service no longer exists"
+	ReasonBuilt     = "built from source (build:)"
 )
 
 // JobStatus is the state of an update job.

internal/master/model/model.go

@@ -51,6 +51,7 @@ type Service struct {
 	ActualDigest   string
 	Status         string
 	Self           bool
+	Built          bool // Compose service with a build: section; never updated
 	UpdateMode     string
 	FirstSeenAt    time.Time
 	UpdatedAt      time.Time