I also develop on OSX or Windows systems, targeting Linux as the deployment system. And I also want to test the code in an environment as close to production as

I also develop on OSX or Windows systems, targeting Linux as the deployment system. And I also want to test the code in an environment as close to production as possible. That is why I install Virtualbox and set up virtual Linux servers using the exact same server management scripts (in my case Ansible) as are used to configure production servers. It works great with no Docker. But I do use Docker as well for servers that are more cookie cutter than a db. For instance a JVM app server that has two Docker images, one with 3 layers culminating in the JVM app, and one with 2 layers culminating in an NGINX SSL proxy. And I don't run Docker on OSX at all because it is just a wrapper for running Virtualbox with a Linux server inside. It is simplicity to just set up Virtualbox directly and just use Linux virtual servers directly.