I am trying to write a build pipeline in Azure DevOps that will compile an application and build a windows docker image. The building of the application is fine and I have a Dockerfile checked in but when the build image task is run I get the following error.
"The container operating system does not match the host operating system."
The build agents I have tried are "windows-latest" and "windows-2022" which are more than likely the same thing.
pool:
vmImage: 'windows-2022'
- task: Docker#2
displayName: Build an image
inputs:
containerRegistry: 'MyContainerRegistry'
repository: '$(project.name)'
command: 'build'
Dockerfile: '$(project.folder)/Dockerfile'
I would understand this error if I was attempting to do this on a Linux host but because I am using a windows host I'm not sure what the issue is.
The base image in the DockerFile is:
FROM mcr.microsoft.com/windows:20H2
As the error message describing, I suppose that you need to validate the container image version with the host version again before your retest. You could try to change a docker container version or switch to windows-2019 image.
When referencing the doc for Windows container version compatibility, I found the readness below. And you could look into more compatibility.
For any other scenario where there is a mismatch in host/guest Windows
versioning compatibility between User/Kernel mode is possible, but not
guaranteed, and thus the container image will be prevented from
running on the host.
By the way, below is list for docker image version compatible with Window server 2022
Last but not lease, it is also important to follow the Base Image Lifecycle in developing.
Related
I have a Google Cloud VM that installed with my application. The installation step is completed and I:
Turned off the VM instance.
Exported the disk to disk image called MY_CUSTOM_IMAGE_1
My wish now is to use MY_CUSTOM_IMAGE_1 as the starting image of my docker image build. For building the images I'm using Google Cloud Build.
My docker file should look like this:
FROM MY_CUSTOM_IMAGE_1 AS BUILD_ENV
...
When I tried to use this image I got the build error:
ERROR: build step 0 "gcr.io/cloud-builders/docker" failed: exit status 1
ERROR
pull access denied for MY_CUSTOM_IMAGE_1, repository does not exist or may require 'docker login'
Step 1/43 : FROM MY_CUSTOM_IMAGE_1 AS BUILD_ENV
The reason is that VM images are not the same as Docker images.
Is this possible to make this transform (GCP VM Image -> Docker image), without external tools (outside GCP, like "docker private repositories")?
Thanks!
If you know all the installed things on your VM (and all the commands), do the same thing in a Dokerfile. Use as base image, the same OS version as your current VM. Perform some tests and it should be quickly equivalent.
If you have statefull files in your VM application, it's a little bit more complex, you have to mount a disk in your container and to update your application's configuration to write in the correct mounted folder. It's more "complex" but there is tons of example on internet!
No, this is not possible without a tool to extract your application out of the virtual machine image and recreate in a container. To the best of my knowledge, there is no general-purpose tool that exists.
There is a big difference between a container image and a virtual machine image. Container images do not have an operating system, virtual machine images are a complete operating system and device data. The two conceptually are similar, but extremely different in how they are implemented at the software and hardware level.
I have recently heard about Actinia and I would like to try it out (I am remote sensing anaylst, I am not used to use command line )
I use Windows 10 . I have cloned Actinia on github and trying to use it on my docker container. I changed my windows containers to linux containers. Once I type in on my GitBash
docker-compose build --pull
It stops at step 16/49, while trying to connect to GRASS GIS. It iterates on the same problem,
GRASS GIS libgis version and date number not available
ERROR: Cannot open URL:
and the url he is trying to connect to.
Thus, I wonder if there is a configuration I am missing.
Source: https://github.com/mundialis/actinia_core/tree/master/docker
GitLab CI is highly integrated with Docker.
But sometimes, if the project depends on the interaction with Linux kernel like LUKS. It cannot works properly.
The project cryptsetup use Travis-CI instead of GitLab CI even if it host on gitlab.com. I don't know if it is just personal preference of project maintainer.
Hence is it possible to run QEMU or Firecracker instead of Docker?
Is there any equivalent alternative in GitLab than Travis-CI?
This is not yet supported.
A recent (mid-2019) gitlab-org/gitlab-runner issue 4338 mentions katacontainers with firecracker vms as one possible alternative to Docker Machine, for autoscaling.
But this is still being studied.
I am trying to setup a docker image for an mvc5 website to deploy to my service fabric Windows server 2016 with containers based cluster.
It seems that every image with IIS configured is based on a different windows build than 14393, and when I deploy those to service fabric they fail to start on my windows servers.
Am I missing something here? Does it matter what server the dockerfile runs on? So far is seems impossible to get a simple site up and running in a docker container on my service fabric cluster. I spent over a day with microsoft/windowsservercore and it just won't work, and there seems to be no way to enable failed request tracing on it because attempting to install Web-Server with all submodules fails.
If you go to docker registry, find the image, and navigate to the TAGS tab, you can find all image versions and the respective build.
For ASPNET MVC, the image microsoft/aspnet with tag 4.7.1-windowsservercore-10.0.14393.1884 is probably the one you need.
For IIS image, the image microsoft/iis with tag windowsservercore-10.0.14393.1944 might be suitable for you, you might have to add the missing packages for your application.
The problem is likely you trying to use the latest image, that won't be compatible. In your docker image, when you create the docker file,
Instead of using FROM microsoft/aspnet
you should use FROM microsoft/aspnet:4.7.1-windowsservercore-10.0.14393.1884
with the image tag after the name, otherwise you will use the latest version, that is not always compatible and should be avoided
I'm on the latest insider preview build for Window 10 (14955.rs_prerelease.161020-1700). I'm also using the most current Docker for Windows (1.12.3-beta29.2 (8280)). I have a Docker build for a simple nanoserver image. When I run the image I get the following error.
docker: Error response from daemon: container e0fa9da740f6ce0534516ededcce3d6f8f4c07ee656ce12e7b76b73077c52f38 encountered an error during Start: failure in a Windows system call: The system cannot find the path specified. (0x3): Are you trying to mount a directory onto a file (or vice-versa)? Check if the specified host path exists and is the expected type.
Outside of using the 1.13 version of the Docker engine as outline here. Is there a way to get this to work?
I would rather stick with Docker for Windows since I go back and forth (Linux and Windows) and the tooling makes it easy