Is docker for windows running linux container in virtualbox? - windows

I installed the latest docker for windows from website.
there is no virtualbox installed. How windows run a linux container in my computer ? Is have a buildin linux kernel in windows?

It uses HyperV in newer releases. VirtualBox was used by docker-machine which is part of docker-toolkit.
Inside of the VM, there is a Linux kernel in a linuxkit based OS that is part of the moby project.
Connecting to the docker socket on Windows is described in this FAQ: https://docs.docker.com/docker-for-windows/faqs/#how-do-i-connect-to-the-remote-docker-engine-api

Related

How to run Docker inside Virtualbox (Ubuntu) and use it on Win10 host

i´m forced to use Win10 and Docker on my working PC. I like to set up a Virtualbox VM with Ubuntu and install docker on Ubuntu-VM. How can i map Docker from the VM to the Windows Host, run it in Ubuntu VM and use it on Win10 Host?
Thank you
This could be answered in https://serverfault.com/questions/225155/virtualbox-how-to-set-up-networking-so-both-host-and-guest-can-access-internet.
Another way that would come to my mind is using the Windows Subsystem for Linux.
But docker can also just run natively on a Windows host, which would save you the trouble.

How to enable vt-x in centos on docker on mac os

I use official centos image in docker hub.
My machine is mac that support vt-x.
But when I run centos on docker on mac, in centos, it doesn't show vmx in /proc/cpuinfo
I wonder that why guest os(centos) says that doesn't support vm even though my host support.
Is there any way that enable vt-x in centos on docker on my machine?

Can I run Windows containers on Docker Desktop for Mac? [duplicate]

This question already has answers here:
How can I run a docker windows container on osx?
(3 answers)
Closed 1 year ago.
This post was edited and submitted for review 1 year ago and failed to reopen the post:
Original close reason(s) were not resolved
I want to be able to run Windows Docker Containers on my Mac, it seems this was sort of supported using Docker Toolbox
How can I run a docker windows container on osx?
But it seems that this is now deprecated and we should be using Docker Desktop now.
Docker Desktop has a better and New Hypervisor called HyperKit instead of Virtual Box https://docs.docker.com/docker-for-mac/docker-toolbox/
Docker toolbox allowed starting Windows Containers using VirtualBox, so not sure if that mean's that this is still possible?
I have found a reference to putting Docker Desktop into "Windows Container Mode" here https://www.clearpeople.com/insights/blog/2018/june/sitecore-demo-in-a-docker-container
But I cannot find anywhere to enable this, any help or insight would be very much appreciated.
There is a related question here How can I run a docker windows container on osx? but it's so old that is irrelevant and should not be a reason to lock this question.
Docker only runs natively on Linux machines because it needs Linux kernel features called namespaces and control groups. Docker containers are built from cut down Linux distributions.
The original solution to running Docker on OS X and Windows was Docker Toolkit. This was actually a Linux virtual machine running in the VirtualBox Hypervisor. The VM had Docker installed and could run containers.
Docker Desktop for Mac still makes use of a virtual machine running Linux running in the HyperKit Hypervisor. This virtual machine is lightweight and effectively hidden from the user.
Likewise Docker Desktop for Windows makes use of a virtual machine running in the Hyper-V Hypervisor. It can also run Windows containers.
To run Windows containers you need to have a Windows machine running Docker. The Windows machine can be virtual machine running on a Mac or Linux machine.
I know I am late to the party but as of 2021, this is the easiest setup to get a windows container running on macOS:
https://github.com/StefanScherer/windows-docker-machine
Install vagrant and virtual box
Clone the repository above and change directory into it
vagrant up --provider virtualbox 2019-box
docker context use 2019-box
I followed this setup and I could use the following windows image
mcr.microsoft.com/windows/servercore:ltsc2019
Please note that the windows version of your host must match the container image. This is mentioned here: https://hub.docker.com/_/microsoft-windows
Windows requires the host OS version to match the container OS
version. If you want to run a container based on a newer Windows
build, make sure you have an equivalent host build.

which windows 10 edition for running docker containers?

it says that prereqisite is windows 10 pro or enterprise edition because of hyper-v but ia that for running windows containers only or is pro/enterprise edition needed for running linux containers also?
If you don't have access to a Windows 10 version with Hyper-V, you can use the older Docker Toolbox product which relies on VirtualBox: https://www.docker.com/products/docker-toolbox
As #friism pointed out w/o HyperV you have to use the old Docker toolbox option. This is due to the fact that the docker daemon does not run on Windows natively. Instead it started a small Linux machine (on windows using hyperV); inside this linux machine is where all the docker and tools are executed. The desktop client is simply a nice UI to send the commands to the virtualized linux machine.

Possible to build and run Docker images in Linux VM on Parallels on OS X?

I'm just getting started with Docker and use a MacBook Pro for development work. I see the Docker instructions recommend using Virtual Box and Boot2Docker in this environment. Anyone know if it would also work in a Linux VM in Parallels?
You can totally run Docker in another kind of Linux VM.
If you already have some kind of Linux VM running, just check Docker installation instructions for the distro installed in the Linux VM.
If you don't have a Linux VM, or if you don't want to touch your existing Linux VM, you can also download boot2docker, and when creating the new VM, just attach the boot2docker image as a virtual CD-ROM image or a virtual hard disk image (yes, it actually supports both).

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