Azure pipelines running steps inside service containers - azure-devops

Question

Follow on question from a previous question about targeting containers in Azure pipelines
I am trying to use a playwright container in an Azure pipeline to access the default installed browsers in the image
My main 'azure-pipelines.yml' looks like this
trigger: none
pr: none
pool:
vmImage: ubuntu-latest
resources:
containers:
- container: playwright
image: mcr.microsoft.com/playwright:v1.30.0-focal
- container: pwsh
image: mcr.microsoft.com/powershell
stages:
- stage: dev
displayName: dev
jobs:
- template: templates/test.yml
And my 'templates.yml' looks like this
jobs:
- job: run_tests
displayName: Test
pool:
vmImage: ubuntu-latest
services:
playwright: playwright
pwsh: pwsh
steps:
- powershell: |
Write-Host "This is powershell"
target:
container: pwsh
- script: yarn test:integration:ci
displayName: "Run tests"
env:
environment: dev
CI: true
target:
container: playwright
But when I run the pipeline, the playwright part does not seem to be working?
Running 50 tests using 1 worker
FFFFF
1) [chromium] › alternativeJourneys.spec.ts:24:5 › Register interest =============================
browserType.launch: Executable doesn't exist at /home/vsts/.cache/ms-playwright/chromium-1045/chrome-linux/chrome
╔═════════════════════════════════════════════════════════════════════════╗
║ Looks like Playwright Test or Playwright was just installed or updated. ║
║ Please run the following command to download new browsers: ║
║ ║
║ npx playwright install ║
║ ║
║ <3 Playwright Team ║
╚═════════════════════════════════════════════════════════════════════════╝
I have pulled the playwright:v1.30.0-focal image locally and verified that the path mentioned
/ms-playwright/chromium-1045/chrome-linux/chrome
does exist. So am wondering if that /home/vsts/.cache prefix means this is not running inside the container?
My yarn.lock and package.json versions also match the 1.30.0 version of the image I am pulling.
I am wondering if my syntax of target: is the correct way to make this script run in that container?
If I modify the yaml to this to try to make the whole thing run in the playwright container, then the powershell command fails, again, as I am unsure if my target: syntax is the correct way to go?
- job: run_tests
displayName: Test
pool:
vmImage: ubuntu-latest
container: mcr.microsoft.com/playwright:v1.30.0-focal
services:
playwright: playwright
pwsh: pwsh
steps:
- powershell: |
Write-Host "This is powershell"
target:
container: pwsh
- script: yarn test:integration:ci
displayName: "Run tests"
env:
environment: dev
CI: true
target:
container: playwright
Is what I am attempting possible and I just have wrong syntax? Or am I approaching this in the wrong way?
Appreciate any insight, not a massive amount of hands on with container of Azure pipelines
Many thanks
=============================================================
New info:
It looks like the same hostname for each step
- script: |
echo "Powershell hostname $HOSTNAME"
target:
container: pwsh
- script: |
echo "Playwright hostname $HOSTNAME"
target:
container: playwright
Yields
Powershell hostname fv-az461-670
and
Playwright hostname fv-az461-670
respectively
fv-az461-670 is the the hostname of the agent host
I don't think I have got this quite right?

Answer 1

Found this
https://github.com/microsoft/azure-pipelines-yaml/blob/master/design/step-target.md
Which had a clearer example of using service containers. Showed my syntax was wrong
Adjusted my template to this and the pipeline worked
jobs:
- job:
displayName: Test
pool:
vmImage: ubuntu-latest
services:
playwright:
image: mcr.microsoft.com/playwright:v1.30.0-focal
pwsh:
image: mcr.microsoft.com/powershell
steps:
- powershell: |
Write-Host "Powershell"
target:
container: pwsh
- script: yarn test:integration:ci
displayName: "Run tests"
env:
environment: dev
CI: true
target:
container: playwright
Thank you