Making the process even harder, VirtualBox doesn’t offer any sort of technical support to users, so you’ll have to find help in the free guides on its website or in the user forums. Read more: How to Use VirtualBox: User's Guide Creating a new virtual machine is much more time-consuming than in Parallels Desktop or VMWare Fusion Player, and you’ll need to know details such as the amount of RAM, CPU cores, and hard drive space to allocate to your VM. The VirtualBox interface can be intimidating, as it shows a lot of technical details and specifications without many tips or descriptions for beginners. The interface looks pretty dated and isn’t as streamlined as other virtual machine software, though VirtualBox has made some improvements that give it more polish. VirtualBox supports a great number of guest operating systems going all the way back to Windows 98, and you can even run your own servers. It’s designed with developers and IT professionals in mind, so VirtualBox provides you with a great deal of control over your virtual environments. Don't create mission critical servers on this way.VirtualBox is a free and open source virtual machine software from Oracle. It is okay for testing a docker container on a Windows machine, what you've developed on a Linux. Sometimes it will be a little bit buggy, but only your HyperV will crash out, your virtual Win, or your host machine won't. 8GB virtual RAM inside the Windows VM for the HyperV Linux host.12GB virtual RAM for the Windows VM running on it.32GB physical RAM for the physical host.A relative useful configuration would be: There are significant speed costs, but it may be useful for development on Linux, and then trial-test on Windows configurations. I configured them deeply and strongly, I've hacked them, I did every possible to do. I tried qemu/kvm, virtualbox and vmware player. HyperV is managed by the docker installed on your virtual Windows.Which means that you can only run, if you can use nested virtualization: Windows Docker internally uses Hyper-V to emulate the containers. In the case of Windows, it is not so easy. Thus, the Linux docker is not virtualization. If the VM is a Linux, you can do this without any problem - on Linux, the Docker is essentially a well-worked chroot.

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