Image2docker for ASP.NET Websites: Part 2

This is a continuation of the previous posts that covered how to setup and run Image2Docker.

Docker Installation Status
  • Open PowerShell command and execute the following command.
  • docker info
  • Docker is already installed in the system If the command returns something like the below.

  • The docker is not installed in the machine if you see the error like below

Install Docker if not exists
  • Please follow the instructions below if docker is not installed in your machine.
  • Install the Docker-Microsoft PackageManagement Provider from the PowerShell Gallery.
    Install-Module -Name DockerMsftProvider -Repository PSGallery -Force
  • Next, you use the PackageManagement PowerShell module to install the latest version of Docker.
    Install-Package -Name docker -ProviderName DockerMsftProvider
  • When PowerShell asks you whether to trust the package source ‘DockerDefault’, type A to continue the installation. When the installation is complete, reboot the computer.
    Restart-Computer -Force
        Tip: If you want to update Docker later:
        Check the installed version with
                    Get-Package -Name Docker -ProviderName DockerMsftProvider 

    Find the current version with    

                    Find-Package -Name Docker -ProviderName DockerMsftProvider 

    When you’re ready, upgrade with

                    Install-Package -Name Docker -ProviderName DockerMsftProvider -Update -Force 
                    Start-Service Docker 
  • Ensure your Windows Server system is up-to-date by running. Run the following command.
    • This shows a text-based configuration menu, where you can choose option 6 to Download and Install Updates.
                                               Server Configuration
                      1) Domain/Workgroup:                    Workgroup:  WORKGROUP
                      2) Computer Name:                       WIN-HEFDK4V68M5
                      3) Add Local Administrator
                      4) Configure Remote Management          Enabled
                      5) Windows Update Settings:             DownloadOnly
                      6) Download and Install Updates
                      7) Remote Desktop:                      Disabled
    •  When prompted, choose option A to download all updates.
Create Containers from Imag2Docker Dockerfile.
  • Make sure that docker installed on your Windows 2016 or Windows 10 with Anniversary updates.
  • To build that Dockerfile into an image, run:
                    docker build -t img2docker/aspnetwebsites. 
  • Here img2docker/aspnetwebsites is the name of the image. You can give your own name based on your needs.
  • When the build completes, we can run a container to start my ASP.NET sites.
  • This command runs a container in the background, exposes the app port, and stores the ID of the container.
                    $id = docker run -d -p 81:80 img2docker/aspnetwebsites 

    Here 81 is the host port number and 80 is the container port number.

  • When the site starts, we will see in the container logs that the IIS Service (W3SVC) is running:
                    docker logs $id 

    The Service ‘W3SVC’ is in the ‘Running’ state.

  • Now you can browse to the site running in IIS in the container, but because published ports on Windows containers don’t do loopback yet, if you’re on the machine running the Docker container, you need to use the container’s IP address:
                    $ip = docker inspect --format '{{ .NetworkSettings.Networks.nat.IPAddress }}' 
                    start http://$($ip) 

That will launch your browser and you’ll see your ASP.NET Web application running in IIS, in Windows Server Core, in a Docker container.

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