Does tapping a creature force it to attack?
No. It's the other way around: attacking with a creature requires tapping it. (Unless it has vigilance!)

If you do something else that causes a creature to be tapped, it never causes it to attack. Only actually declaring it as an attacker (during the declare attackers step in the combat phase) will do that.

If you do want to force a creature to attack, you have to do it directly, using something like Shipwreck Singer.