I honestly don't feel a man who drinks regularly having a bottle when the baby is in bed is a huge problem. There are so many ways round the "problem" if something out of the ordinary happened.
If you go off on one about this, he's likely to do it anyway but hide it - it creates dysfunctional behaviour. If he does have a drink problem, its him who has to recognise it and deal with it if he chooses to do so.
I don't buy the "if you want your partner to help out you have to let him do it his own way thing" as such - its more "its his baby too and is equally entitled to make his own decisions regarding care" - its not that the woman decides the rules and the man follows them, or vice versa. You are equals, and adults. What one adult may do another may not. This can even exist within the same family unit.
From time to time my DH will swoop in on the weekend and suggest various changes. Unless he is here all the time and willing to implement them, its really not his call. Nor is it my call to tell him what to do with his time away from the children.
Different state of affairs, of course, if he drove somewhere after a bottle of wine. But he didn't.
People have children where nobody has a licence to drive. If an emergency happens, they are equally able to deal with it as a non-driver.
If I were you, and I'm not, but if I were, I would cease to mention any drinking related behaviour, unless it is having a major impact on your family finances or relationship. Back right off and see just how much he actually drinks when he's not being watched, having bottles counted, having sidelong glances, or any kind of intervention. He might be a "rebellious teenager" type drinker - one who goes overboard when away from you because he can - or simply someone who wants to drink more than he should and does regardless.
Anyway, the issues are sort of separate - you didn't ask him not to drink with the baby, you may have issues over his contribution, you may have issues with his drinking - its getting slightly jumbled and like Anyfucker said you need to separate the issues and deal with them as separate issues.
His drink problem cannot be your drink problem. It has to be his problem before he will see it as a problem. Otherwise you are the problem. If you see no end to the problem, then he is the problem, and therefore you have to deal with that problem - him, not his drinking.