add github-action-benchmark (#504)

* add github-action-benchmark

* edit action name

.github/workflows/ci.yml

@@ -71,7 +71,22 @@ jobs:
           key: ${{ runner.os }}-${{ hashFiles('./tests/benchmarks/__init__.py') }}
 
       - name: Run Benchmark
-        run: python -m pytest --benchmark-only --benchmark-autosave --benchmark-columns 'min, max, mean, median' --benchmark-sort 'min'
+        run: python -m pytest --benchmark-only --benchmark-autosave --benchmark-columns 'min, max, mean, median' --benchmark-sort 'min' --benchmark-json output.json
+
+      - name: Store and Compare benchmark result
+        uses: benchmark-action/github-action-benchmark@v1
+        with:
+          name: rio-tiler Benchmarks
+          tool: 'pytest'
+          output-file-path: output.json
+          alert-threshold: '130%'
+          comment-on-alert: true
+          fail-on-alert: true
+          # GitHub API token to make a commit comment
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          # Make a commit on `gh-pages` only if master
+          auto-push: ${{ github.ref == 'refs/heads/master' }}
+          benchmark-data-dir-path: benchmarks
 
   publish:
     needs: [tests]