There are public trusted images, like the so-called official repositories on Docker Hub [1]. As long as you build your images based on official repo images, you

There are public trusted images, like the so-called official repositories on Docker Hub [1]. As long as you build your images based on official repo images, you're probably fine. Just don't depend on untrusted images; instead get their dockerfile/config files, and build the images yourself. To me, a Docker image seems like an ideal way to distribute some proprietary device management web software like Ubiquity UNMS, rather than requiring some obscure version of some database or whatever other dependency actually be installed and maintained by their clients. You can spin that image up on a server or group of servers, or on Amazon ECS or a bunch of other providers in a matter of minutes. With enough motivation, you could even export the image and manage the environment manually. [1] https://hub.docker.com/_/php/ https://hub.docker.com/_/php/