PR comment with link to built artifacts

Signed-off-by: Nicolas De Loof <nicolas.deloof@gmail.com>

.github/workflows/ci.yml

@@ -106,5 +106,15 @@ jobs:
         uses: actions/upload-artifact@v2
         if: github.event_name == 'pull_request'
         with:
-          name: docker-windows-linux-amd64.exe
+          name: docker-compose-windows-amd64.exe
           path: ${{ github.workspace }}/bin/docker-compose-windows-amd64.exe
+
+      - id: artifacts
+        uses: scality/action-artifacts-setup@v1
+
+      - uses: mshick/add-pr-comment@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          message: |
+            This PR can be tested using [binaries](https://github.com/docker/compose-cli/actions/runs/${{ github.run_id }})