Add option to disable watchdog and set default timeout to DB healthcheck

storage/storage.go

@@ -5,7 +5,9 @@
 package storage // import "miniflux.app/storage"
 
 import (
+	"context"
 	"database/sql"
+	"time"
 )
 
 // Storage handles all operations related to the database.
@@ -31,7 +33,10 @@ func (s *Storage) DatabaseVersion() string {
 
 // Ping checks if the database connection works.
 func (s *Storage) Ping() error {
-	return s.db.Ping()
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	return s.db.PingContext(ctx)
 }
 
 // DBStats returns database statistics.