Only run the full test suite if required files are touched. This prevents the whole workflow from running for meta/readme changes

Signed-off-by: Adam Warner <me@adamwarner.co.uk>

.github/workflows/test.yml

@@ -8,6 +8,30 @@ permissions:
   contents: read
 
 jobs:
+  # JOB to run change detection
+  changes:
+    runs-on: ubuntu-latest
+    # Set job outputs to values from filter step
+    outputs:
+      requires-distro-test: ${{ steps.filter.outputs.requires-distro-test }}
+    steps:
+    -
+        name: Checkout Repo
+        uses: actions/checkout@v3
+    -
+        name: Check which files have been touched
+        uses: dorny/paths-filter@v2
+        id: filter
+        with:
+          filters: |
+            requires-distro-test:
+              - 'advanced/**'
+              - 'automated install/**'
+              - 'manpages/**'
+              - 'test/**'
+              - 'gravity.sh'
+              - 'pihole'
+
   smoke-tests:
     if: github.event.pull_request.draft == false
     runs-on: ubuntu-latest
@@ -17,6 +41,7 @@ jobs:
       uses: actions/checkout@v3.0.2
     -
       name: Check scripts in repository are executable
+      if: ${{ needs.changes.outputs.requires-distro-test == 'true' }}
       run: |
         IFS=$'\n';
         for f in $(find . -name '*.sh'); do if [[ ! -x $f ]]; then echo "$f is not executable" && FAIL=1; fi ;done
@@ -35,11 +60,10 @@ jobs:
       name: Run editorconfig-checker
       run: editorconfig-checker
 
-
   distro-test:
-    if: github.event.pull_request.draft == false
+    needs: [ smoke-tests, changes ]
+    if: ${{ github.event.pull_request.draft == false && needs.changes.outputs.requires-distro-test == 'true' }}
     runs-on: ubuntu-latest
-    needs: smoke-tests
     strategy:
       fail-fast: false
       matrix: