What of RouterOS, Then?Īll of this is true of containers in general, but our focus here is on how that interacts with RouterOS's Containers feature.ĬHR aside, that feature only works on MikroTik ARM hardware, most of which is rather low-spec. For example, the Chainguard and Google ' distroless' images tick off nearly every item on the list above. The trend going forward in the security-conscious sections of the container industry is to have more of those limitations than less. Even at this remove from the ideal, we're still finding mismatches with the blinkered kernel-less VM view of containers. It may give you local shell access, but it'll operate more like an old-school Unix box's single-user mode than a modern Linux VM. If you choose a 'minimal' container base image, it will likely have at least some of the limitations on the list above. The thing is, the result still won't have a GUI, and it likely won't have an SSH daemon running, either. That should regain you a local shell at least, plus platform libraries and maybe even a package manager. Now you have your single static binary running atop an Ubuntu base. Find the line that says ' FROM scratch…' 1 and change it to ' FROM ubuntu:latest' or similar, then rebuild it. When you do run across this type of container, it is likely that a one-line change to the Dockerfile will convert it to run atop a more full-featured Linux base.

The benefit of doing all that hard work is that the result is smaller and has fewer breakable pieces. The only reason you don't encounter such containers more often is simply that it takes more work to produce them.

For many services, they're the ideal expression of the developer's intent. While such containers are uncommon, they aren't exactly rare. no platform libraries, not even foundational basics like glibc.no root user (or at least one well and truly nerfed).When that program stops, the container stops. Whereas a virtual machine won't boot without an operating system, a container might have as little as a single static binary inside, able to do nothing but start that one program when you start the container. 'Hey, look, you can install Ubuntu in a container!' While it is true that you can do that, to stop thinking about the matter at that level will lead you into conceptual errors when you apply that thinking to containers more broadly. I've run across a lot of people who think of Linux containers as nothing more than kernel-less VMs.

Install mikrotik chr ubuntu