Scale this up to a government organization, and the chance of it happening is basically zero, especially in an emergency. And even if they host their own web servers and manage to get access to them, the chances of them being able to run Docker or really anything besides what they were set up for without unreasonable effort are slim at best.

I'm not saying Netlify is a good solution, but it's one that a single creative tech could figure out and set up in a day and would be almost guaranteed to work well.