Stale (#1659)

* add bot

* test

* add git stale action

* try fix sphinx

* fix

* previous tool is outdated. updated the new instsallation guide

.github/workflows/build_docs.sh

@@ -15,7 +15,7 @@ for f in $EFS/.mxnet/datasets/*; do
     fi
 done
 
-python3 -m pip install sphinx>=1.5.5 sphinx-gallery sphinx_rtd_theme matplotlib Image recommonmark scipy mxtheme
+python3 -m pip install sphinx==3.5.4 sphinx-gallery sphinx_rtd_theme matplotlib Image recommonmark scipy mxtheme
 
 export MXNET_CUDNN_AUTOTUNE_DEFAULT=0
 cd docs 

.github/workflows/stale.yml

@@ -0,0 +1,17 @@
+name: 'Close stale issues and PRs'
+on:
+  schedule:
+    - cron: '30 6 * * *'
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v3
+        with:
+          days-before-stale: 90
+          days-before-pr-stale: -1
+          days-before-issue-close: 7
+          days-before-pr-close: -1
+          stale-issue-message: 'This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.'
+          exempt-issue-labels: 'bug, call for contribution, doc, enhancement, good first issue, help wanted, mxnet, question'

scripts/onnx/README.md

@@ -39,7 +39,7 @@ For those who are interested, below is a guide on how to export the model yourse
 To be notice, current released version of mxnet(1.8.0) does not support many operators. Therefore, in order to export models to onnx, you'll have to either
 
 1. Build the newest version of mxnet from source
-2. Use this [tool](https://github.com/apache/incubator-mxnet/blob/d10b76937b891964381d25ecea60e443a9876df1/tools/onnx/update_onnx.py) to add newly supported operators to your mxnet
+2. Checkout the `installation` section [here](https://github.com/apache/incubator-mxnet/tree/v1.x/python/mxnet/onnx)
 
 There are three main steps to export the model: