Update check.yml

.github/workflows/check.yml

@@ -8,16 +8,24 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - uses: tj-actions/changed-files@v12.2
+        id: files
+        with:
+          files: \.m3u$
       - uses: actions/setup-node@v2
-        if: ${{ !env.ACT }}
+        if: ${{ !env.ACT && steps.files.outputs.any_changed == 'true' }}
         with:
           node-version: '14'
           cache: 'npm'
-      - name: Download data from API
+      - name: download data from api
+        if: steps.files.outputs.any_changed == 'true'
         run: |
           mkdir -p scripts/data
           curl -L -o scripts/data/blocklist.json https://iptv-org.github.io/api/blocklist.json
           curl -L -o scripts/data/channels.json https://iptv-org.github.io/api/channels.json
-      - run: npm install
-      - run: npm run playlist:lint
-      - run: npm run playlist:validate
+      - name: validate
+        if: steps.files.outputs.any_changed == 'true'
+        run: |
+          npm install
+          npm run playlist:lint -- ${{ steps.files.outputs.all_changed_files }}
+          npm run playlist:validate -- ${{ steps.files.outputs.all_changed_files }}