Copying configuration of linter from upstream

Author: djw8605

.github/workflows/linter.yml

@@ -12,21 +12,34 @@ name: Lint
 on:
   # push: # Can specify more circumstances under which to run the linter. 
   #   branches: # Not specifying input to "branches:" causes the action to run on push for all branches.            
-
+  push:
+    branches:
+      - master
   # Trigger the workflow on pull request,
   # but only for master
-  pull_request:
+  pull_request_target:
     branches:
       - master
 
+permissions:
+  checks: write
+  contents: read
+
 jobs:
   run-linters:
     name: Run linters
     runs-on: ubuntu-latest
 
     steps:
-      - name: Check out Git repository
-        uses: actions/checkout@v2
+      - name: Check out repository (push)
+        if: ${{ github.event_name == 'push' }}
+        uses: actions/checkout@v3
+      
+      - name: Check out repository (pull_request_target)
+        if: ${{ github.event_name == 'pull_request_target' }}
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
 
       - name: Install ClangFormat
         run: sudo apt-get install -y clang-format
@@ -39,7 +52,7 @@ jobs:
           clang_format_auto_fix: false
           auto_fix: false
           commit: false
-          continue_on_error: true
+          continue_on_error: false
           git_email: github.event.commits[0].author.name # Uses the author's git email instead of the default git email associated with the action ("lint-action@samuelmeuli.com")
           clang_format_args: -style=file # Any additional arguments for clang_format