save build output to artifacts

.github/workflows/build.yml

@@ -103,6 +103,16 @@ jobs:
       - name: "Test summary"
         run: "grep -r '===.* in ' `find . -path '*build/out*txt'`| sed -e 's/===*//g' "
 
+      - name: Zip build output
+        run: zip -r ./build.zip ./build
+
+      - name: Push build output to artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: build
+          path: ./build.zip
+          retention-days: 2
+
       - name: dump logs
         if: ${{ inputs.dump_logs }}
         run: for d in build/*/*.log; do echo === $d:; cat $d | perl -pe 's/(?:runbundler-)?(\S+?)(?:-1)?[\s|]+(\S+)/$2 $1 /' | sort ; done