Send a workflow warning when changing file permissions

Pages DFS needs the "group read" permission set on any file it serves,
so add read permission before tarring to prevent unreadable files from
being deployed.

This only applies to files that are built on an actions runner, not
files that are cloned from a git repoitory, because git's permissions
are limited to the equivalents of chmod 644 and 755.

.github/workflows/draft-release.yml

@@ -8,7 +8,7 @@ jobs:
   draft-release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: release-drafter/release-drafter@v5
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

action.yml

@@ -14,9 +14,13 @@ runs:
   using: composite
   steps:
     - name: Archive artifact
-      shell: bash
+      shell: sh
       if: runner.os == 'Linux'
       run: |
+        for f in $(chmod -c -R +r . | awk '{print substr($3, 2, length($3)-2)}')
+        do
+          echo "::warning::Added read permission to $f"
+        done
         tar \
           --dereference --hard-dereference \
           --directory "$INPUT_PATH" \
@@ -29,9 +33,13 @@ runs:
 
     # Switch to gtar (GNU tar instead of bsdtar which is the default in the MacOS runners so we can use --hard-dereference)
     - name: Archive artifact
-      shell: bash
+      shell: sh
       if: runner.os == 'macOS'
       run: |
+        for f in $(gchmod -c -R +r . | awk '{print substr($3, 2, length($3)-2)}')
+        do
+          echo "::warning::Added read permission to $f"
+        done
         gtar \
           --dereference --hard-dereference \
           --directory "$INPUT_PATH" \