The documentation of the bootstrap 3 container class states that \'due to padding and more, neither container is nestable\". But then, in the official examples, take this,
This has been brought up as in issue on the Bootstrap repo:
https://github.com/twbs/bootstrap/issues/15512
I'm not sure if the doc will be updated accordingly, but as you'll see in the issue it looks like it's ok to put a container-fluid inside a container.
container-fluid
container