Create hosts file entry for docker dynamically by name

Create-DockerContainerHostEntry.ps1

function Replace-HostEntry ($targetDns, $newIpAddress) {
  $hostsPath = "$env:windir\System32\drivers\etc\hosts"
  $hosts = Get-Content $hostsPath
  $hosts = $hosts -replace "^.+$targetDns", "$newIpAddress        $targetDns"
  $hosts | Out-File $hostsPath -enc ascii
}

function Get-DockerIpByImageName($imageName) {
  $container = docker ps | Select-String $imageName

  if ($container) {
    Write-Information "Found container $container"
    $containerId = $container.ToString().SubString(0, 12)
    docker inspect --format "{{ .NetworkSettings.Networks.nat.IPAddress }}" $containerId
  }
  else {
    Write-Warning "No docker container found with image name $imageName"
  }
}

function Set-DockerContainerHostEntry($containerImageName, $targetDns) {
  $ipAddress = Get-DockerIpByImageName -imageName $containerImageName

  if ($ipAddress) {
    Write-Information "Found ip address for container at $ipAddress"
    Replace-HostEntry -targetDns $targetDns -newIpAddress $ipAddress
    Write-Information "Successfully set $targetDns entry in hosts file to $ipAddress"
  }
  else {
    Write-Error "Could not retrieve ip address from docker with image name $containerImageName"
  }
}