Fix bug on admin subcommand (#17533)

* Fix bug on admin subcommand

* Add signals for all initDB

Co-authored-by: Lauris BH <lauris@nix.lv>

cmd/dump_repo.go

@@ -76,7 +76,10 @@ wiki, issues, labels, releases, release_assets, milestones, pull_requests, comme
 }
 
 func runDumpRepository(ctx *cli.Context) error {
-	if err := initDB(); err != nil {
+	stdCtx, cancel := installSignals()
+	defer cancel()
+
+	if err := initDB(stdCtx); err != nil {
 		return err
 	}