Karim Adeyemi scored a hat-trick and Serhou Guirassy a brace as Borussia Dortmund stormed to the top of the Champions League standings with a 7-1 demolition of Celtic, while Manchester City, Inter Milan, Arsenal and Barcelona got first wins on Tuesday. Last season’s finalists Dortmund followed up on their opening 3-0 at Club Brugge, leading 5-1 at half-time against Glasgow opponents who were brought down to earth after starting with a 5-1 success over Slovan Bratislava. Also on six points are French debutants Stade Brest with a 4-0 triumph at Red Bull Salzburg, and Bundesliga champions Bayer L…