Yes. HAast fully supports containers. Normally HAast will run inside the container with Asterisk; however, we have seen deployments where HAast runs on the host and starts a container (containing Asterisk) on demand.
If this is you first exposure to HAast we recommend installing HAast inside the container with Asterisk (and optionally a GUI).
Note: Due to excessive support incidents helping customers understand and setup containers, Telium has removed support for this topic. Customers are welcome to use containers, but the technical support team cannot answer questions about their setup, configuration, or use.