Use-case for QA automation testers

hi, I don't have a hands-on experience in docker or any container. I have heard of it and some of the "geek" in random streets of the internet are recommending the use of containers. But I still have doubts, I mean is it really a necessity especially for qa automation? we have a very small team like 2 (you know how employers skimp on quality right?) and the culture is to keep the setup as simple as possible. any idea of use-cases where it could possibly be beneficial for us? thank you!