This is partially disinformation.

You can read about it here in the comments: https://twitter.com/TeaBoots/status/1428359929098768384

TL:DR - It's not a supermarket. It's a mall. This particular mall wanted visitors to show their vaccine cards on entry. The mall knew there would be a crowd of crazy people who would want to use this opportunity to protest, and thus requested extra policemen to attend. The protestors were allowed into the mall, after they filmed themselves yelling, "No to the health pass". Macron recently allowed businesses to ask for the vaccine card before entry. 99.9% of supermarkets are NOT asking for the vaccine card (see the comments). It's a propaganda post created by anti-vaxxers and anti-Macron right-wing assholes to make others think that France is in peril. It's bullshit.