Update docs for PR comment

README.md

@@ -368,62 +368,57 @@ gradle-home-cache-cleanup: true
 
 ## Build reporting
 
-The `gradle-build-action` collects information about any Gradle executions that occur in a workflow, and reports these via
-a Job Summary, visible in the GitHub Actions UI. For each Gradle execution, details about the invocation are listed, together with
-a link to any Build Scan® published.
+The `gradle-build-action` collects information about any Gradle executions that occur in a workflow, including the root project,
+requested tasks, build outcome and any Build Scan link generated. Details of cache entries read and written are also collected.
+These details are compiled into a Job Summary, which is visible in the GitHub Actions UI.
 
-Generation of a Job Summary is enabled by default. If this is not desired, it can be disable as follows:
+Generation of a Job Summary is enabled by default for all Jobs using the `gradle-build-action`. This feature can be configured
+so that a Job Summary is never generated, or so that a Job Summary is only generated on build failure:
 ```yaml
-generate-job-summary: false
+add-job-summary: 'on-failure' # Valid values are 'always' (default), 'never', and 'on-failure'
 ```
 
-Note that the action collects information about Gradle invocations via an [Initialization Script](https://docs.gradle.org/current/userguide/init_scripts.html#sec:using_an_init_script)
-located at `USER_HOME/.gradle/init.d/build-result-capture.init.gradle`.
-If you are using init scripts for the [Gradle Enterprise Gradle Plugin](https://plugins.gradle.org/plugin/com.gradle.enterprise) like
-[`scans-init.gradle` or `gradle-enterprise-init.gradle`](https://docs.gradle.com/enterprise/gradle-plugin/#scans_gradle_com),
-you'll need to ensure these files are applied prior to `build-result-capture.init.gradle`.
-Since Gradle applies init scripts in alphabetical order, one way to ensure this is via file naming.
+### Adding Job Summary as a Pull Request comment
 
-### Build Scan® link as Step output
+It is sometimes more convenient to view the results of a GitHub Actions Job directly from the Pull Request that triggered
+the Job. For this purpose you can configure the action so that Job Summary data is added as a Pull Request comment.
 
-As well as reporting the [Build Scan](https://gradle.com/build-scans/) link in the Job Summary,
-the `gradle-build-action` action makes this link available as a Step output named `build-scan-url`.
-
-You can then use that link in subsequent actions of your workflow. For example:
 
 ```yaml
-# .github/workflows/gradle-build-pr.yml
-name: Run Gradle on PRs
-on: pull_request
+name: CI
+on:
+  pull_request:
+
+permissions:
+  pull-requests: write
+
 jobs:
-  gradle:
+  run-gradle-build:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout project sources
       uses: actions/checkout@v4
     - name: Setup Gradle
-      uses: gradle/gradle-build-action@v2
-    - name: Run build with Gradle wrapper
-      id: gradle
-      run: ./gradlew build --scan
-    - name: "Add Build Scan URL as PR comment"
-      uses: actions/github-script@v5
-      if: github.event_name == 'pull_request' && failure()
+      uses: gradle/gradle-build-action@v3
       with:
-        github-token: ${{secrets.GITHUB_TOKEN}}
-        script: |
-          github.rest.issues.createComment({
-            issue_number: context.issue.number,
-            owner: context.repo.owner,
-            repo: context.repo.repo,
-            body: '❌ ${{ github.workflow }} failed: ${{ steps.gradle.outputs.build-scan-url }}'
-          })
+        add-job-summary-as-pr-comment: on-failure # Valid values are 'never' (default), 'always', and 'on-failure'
+    - run: ./gradlew build --scan
 ```
 
-### Saving build outputs
+Note that in order to add a Pull Request comment, the workflow must be configured with the `pull-requests: write` permission.
 
-By default, a GitHub Actions workflow using `gradle-build-action` will record the log output and any Build Scan links for your build,
-but any output files generated by the build will not be saved.
+
+### Build Scan® link as Step output
+
+As well as reporting all [Build Scan](https://gradle.com/build-scans/) links in the Job Summary,
+the `gradle-build-action` action makes this link available an an output of any Step that executes Gradle.
+
+The output name is `build-scan-url`. You can then use the build scan link in subsequent actions of your workflow. 
+
+### Saving arbitrary build outputs
+
+By default, a GitHub Actions workflow using `gradle-build-action` will record the log output and any Build Scan 
+links for your build, but any output files generated by the build will not be saved.
 
 To save selected files from your build execution, you can use the core [Upload-Artifact](https://github.com/actions/upload-artifact) action.
 For example:
@@ -447,6 +442,14 @@ jobs:
         path: build/reports/
 ```
 
+### Use of custom init-scripts in Gradle User Home
+
+Note that the action collects information about Gradle invocations via an [Initialization Script](https://docs.gradle.org/current/userguide/init_scripts.html#sec:using_an_init_script)
+located at `USER_HOME/.gradle/init.d/gradle-build-action.build-result-capture.init.gradle`.
+
+If you are adding any custom init scripts to the `USER_HOME/.gradle/init.d` directory, it may be necessary to ensure these files are applied prior to `gradle-build-action.build-result-capture.init.gradle`.
+Since Gradle applies init scripts in alphabetical order, one way to ensure this is via file naming.
+
 ## Support for GitHub Enterprise Server (GHES)
 
 You can use the `gradle-build-action` on GitHub Enterprise Server, and benefit from the improved integration with Gradle. Depending on the version of GHES you are running, certain features may be limited: