AzureDevops Pipeline Templates From Folder - azure-devops

Question

I am trying to use templates in my pipeline that are in the same project folder but on Validate yam and run pipeline gives me an error
/templates/transform-settings.yml (Line: 1, Col: 1): A sequence was not expected
Here is the part of azure-pipelines.yml and template:
imagePullSecret: ' fd bfgbgf '
dockerfilePath: '**/Dockerfile'
vmImageName: 'ubuntu-latest'
testVar: 'test'
tag: '$(Build.BuildId)'
ConnectionStrings.DefaultConnection: ""
stages:
- template: templates/transform-settings.yml
- stage: Build
displayName: Build stage
jobs:
- job: Build
displayName: Build
pool:
vmImage: $(vmImageName)
steps:
- task: Docker#2
inputs:
command: buildAndPush
repository: $(imageRepository)
dockerfile: $(dockerfilePath)
containerRegistry: $(dockerRegistryServiceConnection)
.... and template:
- stage: TransformFiles
displayName: TransformFiles
variables:
- ${{ if eq(variables['Build.SourceBranchName'], 'development') }}:
- group: dev-secrets
- name: testVar
value: 'dev'
- name: ConnectionStrings.DefaultConnection
value: $(psql-conn-str-dev)
- ${{ if eq(variables['Build.SourceBranchName'], 'qa') }}:
- group: qa-secrets
- name: testVar
value: 'qa'
jobs:
- job: Transform_AppSettings
steps:
- bash: echo "===== Transforming appsettings.json for $(variables['Build.SourceBranchName']) environment ====="
displayName: 'File Transform'
- task: FileTransform#1
inputs:
folderPath: '$(System.DefaultWorkingDirectory)'
fileType: 'json'
targetFiles: 'appsettings.json'
- upload: appsettings.json
artifact: appsettings

Answer 1

/templates/transform-settings.yml (Line: 1, Col: 1): A sequence was not expected
Based on your yaml sample, the issue is related to the format of the YAML template.
To solve this issue, you need to add the stages: field at the top of the template YAML file.
For example:
azure-pipelines.yml
stages:
- template: templates/transform-settings.yml
- stage: Build
displayName: Build stage
jobs:
- job: Build
displayName: Build
pool:
vmImage: $(vmImageName)
steps:
- task: Docker#2
inputs:
command: buildAndPush
repository: $(imageRepository)
dockerfile: $(dockerfilePath)
containerRegistry: $(dockerRegistryServiceConnection)
transform-settings.yml
stages:
- stage: TransformFiles
displayName: TransformFiles
variables:
- ${{ if eq(variables['Build.SourceBranchName'], 'development') }}:
- group: dev-secrets
- name: testVar
value: 'dev'
- name: ConnectionStrings.DefaultConnection
value: $(psql-conn-str-dev)
- ${{ if eq(variables['Build.SourceBranchName'], 'qa') }}:
- group: qa-secrets
- name: testVar
value: 'qa'
jobs:
- job: Transform_AppSettings
steps:
- bash: echo "===== Transforming appsettings.json for $(variables['Build.SourceBranchName']) environment ====="
displayName: 'File Transform'
- task: FileTransform#1
inputs:
folderPath: '$(System.DefaultWorkingDirectory)'
fileType: 'json'
targetFiles: 'appsettings.json'
- upload: appsettings.json
artifact: appsettings
For more detailed info, you can refer to this doc: YAML template.