AITA for asking my husband to be completley sober?

My husband was an alcoholic for nearly 2 years of our relationship. He was doing drugs aswell, it was awful. If he had a fiver in change, he would literally choose cider over bread for the kids packed lunches. I got him out of it and we have stayed together. This was around 3 years ago. My issue is, he still drinks maybe once a week sometimes twice he will have a beer or two at home. I absolutely hate it, I instantly get my back up and it's a constant reminder of how I used to feel every day. I've asked him multiple times to stop and he says I'm never going to not have a beer if I want one, or he'll say I've had a long day at work it's only 1 or 2. Atleast once a week for the past few weeks he's come home and he stinks of beer, and I can tell he's had a drink. He will swear blind he's not, and it's not fair i accuse him, but I would bet money on it that he has.

The biggest thing of his addiction was lying, he would have a can in his hand and tell me he just found it in the front garden or someone gave it to him walking home. I am really struggling to trust him and I feel like I'm back to before. If I try and talk to him about it, it will be an instant argument and he says I'm holding his past against him.

I am fed up of feeling like he's lying to me and me doubting him. Am I unreasonable to ask him to stop drinking completley?