GitHub: upload logs on failure

Author: guggero

.github/workflows/main.yml

@@ -243,3 +243,16 @@ jobs:
 
       - name: run check
         run: make itest
+
+      - name: Zip log files on failure
+        if: ${{ failure() }}
+        timeout-minutes: 5
+        run: 7z a logs-itest.zip itest/**/*.log
+
+      - name: Upload log files on failure
+        uses: actions/upload-artifact@v3
+        if: ${{ failure() }}
+        with:
+          name: logs-itest
+          path: logs-itest.zip
+          retention-days: 5