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Setting up a Docker based VSTS Agent that can run Docker commands
agent:
image: yourproject.azurecr.io/vsts-agent:${VERSION:-latest}
build:
context: ./build/agent
args:
BUILD_IMAGE: mcr.microsoft.com/windows/servercore:20H2
scale: 0
# escape=`
ARG BUILD_IMAGE
FROM ${BUILD_IMAGE}
SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
RUN Set-ExecutionPolicy RemoteSigned -Force; Set-ExecutionPolicy Unrestricted -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
RUN choco install docker -y
RUN choco install docker-compose -y
WORKDIR /azp
COPY start.ps1 .
CMD powershell .\start.ps1
if (-not (Test-Path Env:AZP_URL)) {
Write-Error "error: missing AZP_URL environment variable"
exit 1
}
if (-not (Test-Path Env:AZP_TOKEN_FILE)) {
if (-not (Test-Path Env:AZP_TOKEN)) {
Write-Error "error: missing AZP_TOKEN environment variable"
exit 1
}
$Env:AZP_TOKEN_FILE = "\azp\.token"
$Env:AZP_TOKEN | Out-File -FilePath $Env:AZP_TOKEN_FILE
}
Remove-Item Env:AZP_TOKEN
if ((Test-Path Env:AZP_WORK) -and -not (Test-Path $Env:AZP_WORK)) {
New-Item $Env:AZP_WORK -ItemType directory | Out-Null
}
New-Item "\azp\agent" -ItemType directory | Out-Null
# Let the agent ignore the token env variables
$Env:VSO_AGENT_IGNORE = "AZP_TOKEN,AZP_TOKEN_FILE"
Set-Location agent
Write-Host "1. Determining matching Azure Pipelines agent..." -ForegroundColor Cyan
$base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(":$(Get-Content ${Env:AZP_TOKEN_FILE})"))
$package = Invoke-RestMethod -Headers @{Authorization=("Basic $base64AuthInfo")} "$(${Env:AZP_URL})/_apis/distributedtask/packages/agent?platform=win-x64&`$top=1"
$packageUrl = $package[0].Value.downloadUrl
Write-Host $packageUrl
Write-Host "2. Downloading and installing Azure Pipelines agent..." -ForegroundColor Cyan
$wc = New-Object System.Net.WebClient
$wc.DownloadFile($packageUrl, "$(Get-Location)\agent.zip")
Expand-Archive -Path "agent.zip" -DestinationPath "\azp\agent"
try
{
Write-Host "3. Configuring Azure Pipelines agent..." -ForegroundColor Cyan
.\config.cmd --unattended `
--agent "$(if (Test-Path Env:AZP_AGENT_NAME) { ${Env:AZP_AGENT_NAME} } else { ${Env:computername} })" `
--url "$(${Env:AZP_URL})" `
--auth PAT `
--token "$(Get-Content ${Env:AZP_TOKEN_FILE})" `
--pool "$(if (Test-Path Env:AZP_POOL) { ${Env:AZP_POOL} } else { 'Default' })" `
--work "$(if (Test-Path Env:AZP_WORK) { ${Env:AZP_WORK} } else { '_work' })" `
--replace
Write-Host "4. Running Azure Pipelines agent..." -ForegroundColor Cyan
.\run.cmd
}
finally
{
Write-Host "Cleanup. Removing Azure Pipelines agent..." -ForegroundColor Cyan
.\config.cmd remove --unattended `
--auth PAT `
--token "$(Get-Content ${Env:AZP_TOKEN_FILE})"
}
docker run --restart always -d -v "\\.\pipe\docker_engine:\\.\pipe\docker_engine"-e AZP_AGENT_NAME=DockerBuildAgent01 -e AZP_POOL="On Premise Build Agents" -e AZP_URL=https://dev.azure.com/yourproject/ -e AZP_TOKEN=yourPAT yourproject.azurecr.io/vsts-agent:latest
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