How many of you at larger companies (at LEAST a 3 stage build pipeline) are using Docker? Are you finding its solutions worth it?

I use it for my personal projects and the good thing about it is, the same server can be used for multiple dockers, for example I use port 80 for the stable release, and port 8001 for my test version, also have MySQL container running side by side with a Dotnet core container.
Anyways if you are going to go full manual it is a waste of time, I have couple of scripts that handle build, deploy, build and run the docker whenever I feel it is time to push a test version.

The other great thing about it, assume you suddenly want extra dependency for your service, it wont break your DB container or any other container you have because your extra dependency is installed inside that one single container and not directly on the server