Containers can be blown up. Just get the supplies out and then blow up the place?

These containers exist on the map immediately, and are not built by players. They cannot be detonated.

Right, I guess only some of them are destructible, as there are certainly pre-placed containers which can be blown up. The ones below roofs are for sure destructible, and IIRC the one next to the garage in Montignac can also be destroyed.

The ones below roofs are for sure destructible

They are collapsing because the building next to them is collapsing.