Initialize Docker Swarm cluster in Windows

Initialize-DockerSwarm.ps1

$hosts = 1..2 | foreach { ("swarm{0:00}.{1}" -f $_, $env:USERDNSDOMAIN).ToLower() }

# Install Docker Engine to all nodes
Invoke-Command -ComputerName $hosts -ScriptBlock {
    Install-PackageProvider -name NuGet -MinimumVersion 2.8.5.201 -Force
    Install-Module -Name DockerMsftProvider -Repository PSGallery -Force
    Install-Package -Name docker -ProviderName DockerMsftProvider -Force
}

# Restart is needed
Restart-Computer -ComputerName $hosts -Protocol WSMan -Wait

# Convert IP leases for Docker hosts to static reservations
$scope = Get-DhcpServerv4Scope
Get-DhcpServerv4Lease -ScopeId $scope.ScopeId | where { $_.Hostname.ToLower() -in $hosts } | Add-DhcpServerv4Reservation

# Configure master
$masterIp = Invoke-Command -ComputerName $hosts[0] -ScriptBlock {
    New-NetFirewallRule -DisplayName "Allow dockerd process" -Program "C:\Program files\Docker\dockerd.exe" -Profile Any -Action Allow -Enabled True -Direction Inbound

    $ip = Get-NetIPAddress -AddressFamily IPv4 -Type Unicast -PrefixOrigin Dhcp | Select-Object -Last 1
    docker swarm init --listen-addr $ip.IPAddress --advertise-addr $ip.IPAddress

    $ip
}

$joinToken = Invoke-Command -ComputerName $hosts[0] -ScriptBlock {
    docker swarm join-token worker --quiet
}

Invoke-Command -ComputerName ($hosts | Select -Skip 1) -ScriptBlock {
    $ip = $Using:masterIp
    docker swarm join --token "$Using:joinToken" $ip.IPAddress
}