PORTN-1360 Add advanced configuration section for triggering pipelines in non-default branches

docs/actions-and-automations/setup-backend/azure-pipeline/azure-pipeline.md

@@ -62,6 +62,11 @@ When using this backend, you need to provide the following:
 - **ADO organization name** - can be found in your URL: `https://dev.azure.com/{AZURE-DEVOPS-ORG}`.
 - **Webhook name** - the name you gave to the webhook resource in the Azure yaml pipeline file.
 
+
+### Trigger pipelines in non-default branches
+
+By default, Azure DevOps pipelines triggered through Port run from the repository's default branch. If you need to trigger pipelines from a specific branch or allow users to select which branch to run from, see the [triggering pipelines in non-default branches](./trigger-non-default-branch) page.
+
 ## Examples
 
 For complete examples of self-service actions using Azure pipelines as the backend, check out the [guides section](/guides?tags=Azure&tags=Actions).

docs/actions-and-automations/setup-backend/azure-pipeline/trigger-non-default-branch.md

@@ -0,0 +1,297 @@
+---
+title: Trigger pipelines in non-default branch
+sidebar_position: 2
+---
+
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
+# Trigger pipelines in non-default branch
+
+By default, Azure DevOps pipelines triggered through Port self-service actions run from the repository's default branch (typically `main` or `master`).   
+We will demonstrate how to configure your action to trigger pipelines from a specific non-default branch.
+
+## Understanding the challenge
+
+1. Azure DevOps webhook triggers don't automatically handle branch specification like GitHub.
+2. The pipeline YAML file location and the branch to run from need to be explicitly defined.
+3. The API payload structure requires specific `refName` formatting.
+
+
+## Solution overview
+
+To trigger Azure DevOps pipelines in a non-default branch, you need to:
+
+1. **Add a branch input** to your self-service action (optional - for user selection).
+2. **Configure the webhook payload** to include the correct `refName` parameter.
+3. **Ensure your pipeline YAML** exists in the target branch.
+
+## Implementation methods
+
+<Tabs>
+<TabItem value="fixed-branch" label="Fixed branch" default>
+
+Use this approach when you always want to trigger from a specific branch.
+
+<h4> Step 1: Configure the action backend</h4>
+
+In your self-service action configuration, use the webhook backend with a payload that specifies the target branch:
+
+```json showLineNumbers
+{
+  "invocationMethod": {
+    "type": "WEBHOOK",
+    "url": "https://dev.azure.com/{{.secrets.AZURE_DEVOPS_ORG}}/{{.secrets.AZURE_DEVOPS_PROJECT}}/_apis/pipelines/{{.secrets.PIPELINE_ID}}/runs?api-version=7.1",
+    "agent": false,
+    "synchronized": true,
+    "method": "POST",
+    "headers": {
+      "Content-Type": "application/json",
+      "Authorization": "Basic {{.secrets.AZURE_DEVOPS_PAT_BASE64}}"
+    },
+    "body": {
+      "resources": {
+        "repositories": {
+          "self": {
+            "refName": "refs/heads/feature/my-feature-branch"
+          }
+        }
+      },
+      "templateParameters": {
+        "{{ spreadValue() }}": "{{ .inputs }}"
+      },
+      "variables": {
+        "PORT_RUN_ID": {
+          "value": "{{ .run.id }}"
+        }
+      }
+    }
+  }
+}
+```
+
+<h4> Step 2: Set up secrets</h4>
+
+Add the following secrets to your Port organization:
+
+- `AZURE_DEVOPS_ORG`: Your Azure DevOps organization name.
+- `AZURE_DEVOPS_PROJECT`: Your project name.
+- `PIPELINE_ID`: The numeric ID of your pipeline.
+- `AZURE_DEVOPS_PAT_BASE64`: Base64 encoded Personal Access Token.
+
+:::tip Getting your pipeline ID
+You can find your pipeline ID in the Azure DevOps URL when viewing the pipeline: 
+`https://dev.azure.com/{org}/{project}/_build?definitionId={PIPELINE_ID}`
+:::
+
+</TabItem>
+<TabItem value="user-selectable" label="User-selectable branch">
+
+Use this approach when you want users to choose which branch to trigger.
+
+<h4> Step 1: Add branch input to your action</h4>
+
+Add a branch selection input to your action's user interface:
+
+```json showLineNumbers
+{
+  "userInputs": {
+    "properties": {
+      "target_branch": {
+        "title": "Target Branch",
+        "type": "string",
+        "enum": [
+          "main",
+          "develop", 
+          "feature/deployment",
+          "hotfix/critical-fix"
+        ],
+        "default": "main",
+        "description": "Select the branch to run the pipeline from"
+      }
+      // ... other inputs
+    }
+  }
+}
+```
+
+<h4> Step 2: Use the input in the webhook payload</h4>
+
+Reference the user input in your webhook body:
+
+```json showLineNumbers
+{
+  "body": {
+    "resources": {
+      "repositories": {
+        "self": {
+          "refName": "refs/heads/{{ .inputs.target_branch }}"
+        }
+      }
+    },
+    "templateParameters": {
+      "{{ spreadValue() }}": "{{ .inputs }}"
+    }
+  }
+}
+```
+
+</TabItem>
+<TabItem value="dynamic-branch" label="Dynamic branch selection">
+
+For advanced use cases, you can use JQ expressions to dynamically determine the branch:
+
+```json showLineNumbers
+{
+  "body": {
+    "resources": {
+      "repositories": {
+        "self": {
+          "refName": "{{ if .trigger.operation == \"CREATE\" then \"refs/heads/main\" elif .inputs.environment == \"staging\" then \"refs/heads/develop\" else \"refs/heads/feature/\" + .inputs.feature_name end }}"
+        }
+      }
+    }
+  }
+}
+```
+
+This approach is useful when you need to:
+- Route different operations to different branches.
+- Use environment-specific branches (staging → develop, production → main).
+- Create dynamic branch names based on user inputs.
+
+</TabItem>
+</Tabs>
+
+### Complete example
+
+Here's a complete self-service action that allows users to deploy from different branches:
+
+<details>
+<summary><b>Complete action JSON</b></summary>
+
+```json showLineNumbers
+{
+  "identifier": "deploy_to_environment",
+  "title": "Deploy to Environment",
+  "icon": "Azure",
+  "description": "Deploy application to specified environment from selected branch",
+  "trigger": {
+    "type": "self-service",
+    "operation": "DAY-2",
+    "userInputs": {
+      "properties": {
+        "environment": {
+          "title": "Environment",
+          "type": "string",
+          "enum": ["staging", "production"],
+          "enumColors": {
+            "staging": "orange",
+            "production": "red"
+          }
+        },
+        "target_branch": {
+          "title": "Branch",
+          "type": "string",
+          "enum": ["main", "develop", "feature/latest"],
+          "default": "main"
+        },
+        "deployment_notes": {
+          "title": "Deployment Notes",
+          "type": "string",
+          "description": "Optional notes for this deployment"
+        }
+      },
+      "required": ["environment", "target_branch"],
+      "order": ["environment", "target_branch", "deployment_notes"]
+    },
+    "blueprintIdentifier": "service"
+  },
+  "invocationMethod": {
+    "type": "WEBHOOK",
+    "url": "https://dev.azure.com/{{.secrets.AZURE_DEVOPS_ORG}}/{{.secrets.AZURE_DEVOPS_PROJECT}}/_apis/pipelines/{{.secrets.DEPLOYMENT_PIPELINE_ID}}/runs?api-version=7.1",
+    "agent": false,
+    "synchronized": true,
+    "method": "POST",
+    "headers": {
+      "Content-Type": "application/json",
+      "Authorization": "Basic {{.secrets.AZURE_DEVOPS_PAT_BASE64}}"
+    },
+    "body": {
+      "resources": {
+        "repositories": {
+          "self": {
+            "refName": "refs/heads/{{ .inputs.target_branch }}"
+          }
+        }
+      },
+      "templateParameters": {
+        "environment": "{{ .inputs.environment }}",
+        "deployment_notes": "{{ .inputs.deployment_notes }}",
+        "triggered_by": "{{ .trigger.by.user.email }}",
+        "port_run_id": "{{ .run.id }}"
+      },
+      "variables": {
+        "ENVIRONMENT": {
+          "value": "{{ .inputs.environment }}"
+        },
+        "PORT_RUN_ID": {
+          "value": "{{ .run.id }}"
+        }
+      }
+    }
+  },
+  "requiredApproval": false
+}
+```
+
+</details>
+
+<h4> Pipeline YAML considerations</h4>
+
+Ensure your pipeline YAML file exists in the target branch and is configured to handle webhook triggers:
+
+```yaml showLineNumbers title="azure-pipelines.yml"
+# Disable automatic CI triggers since we're using webhooks
+trigger: none
+
+# Define the webhook resource
+resources:
+  webhooks:
+    - webhook: port_trigger
+      connection: port_trigger  # Your service connection name
+
+# Pipeline parameters (optional)
+parameters:
+- name: environment
+  type: string
+  default: 'staging'
+- name: deployment_notes
+  type: string
+  default: ''
+
+variables:
+- name: targetEnvironment
+  value: ${{ parameters.environment }}
+
+stages:
+- stage: Deploy
+  jobs:
+  - job: DeployJob
+    steps:
+    - script: |
+        echo "Deploying to: $(targetEnvironment)"
+        echo "Branch: $(Build.SourceBranch)"
+        echo "Notes: ${{ parameters.deployment_notes }}"
+        echo "Port Run ID: $(PORT_RUN_ID)"
+      displayName: 'Deploy Application'
+
+    # Add your actual deployment steps here
+    - script: |
+        # Your deployment logic
+        echo "Deployment completed successfully"
+      displayName: 'Run Deployment'
+```
+
+## Troubleshooting
+See the [troubleshooting guide](/actions-and-automations/setup-backend/azure-pipeline/troubleshooting) for common issues and their solutions.