Merge pull request #5 from ipld/autorebase

add a workflow to manually trigger a rebase of a PR opened by ipldbot

.github/workflows/copy-workflow.yml

@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
       matrix:
         cfg: ${{ fromJson(needs.matrix.outputs.targets) }}
-        workflow: [ "go-test", "go-check" ]
+        workflow: [ "autorebase", "go-test", "go-check" ]
     env:
       WORKFLOW_DIR: "workflow-repo"
       FILE: "${{ matrix.workflow }}.yml"
@@ -64,7 +64,11 @@ jobs:
       with:
         commit-message: update ${{ env.FILE }}
         title: update ${{ matrix.workflow }} workflow
-        body: update to https://github.com/${{ github.repository }}/commit/${{ github.sha }}
+        body:  |
+          update to https://github.com/${{ github.repository }}/commit/${{ github.sha }}
+
+          ---
+          You can trigger a rebase by commenting `@ipldbot rebase`.
         token: ${{ secrets.IPLDBOT_GITHUB_TOKEN }}
         committer: ipldbot <ipldbot@users.noreply.github.com>
         author: ipldbot <ipldbot@users.noreply.github.com>

workflow-templates/autorebase.yml

@@ -0,0 +1,22 @@
+# Allow PRs opened by ipldbot to be rebased by commenting "@ipldbot rebase" on the PR.
+
+on: 
+  issue_comment:
+    types: [ created ]
+
+name: Automatic Rebase
+jobs:
+  rebase:
+    name: Rebase
+    if: github.event.issue.pull_request != '' && github.event.issue.user.login == 'ipldbot' && contains(github.event.comment.body, '@ipldbot rebase')
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout the latest code
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+        token: ${{ secrets.IPLDBOT_GITHUB_TOKEN }}
+    - name: Automatic Rebase
+      uses: cirrus-actions/rebase@1.4
+      env:
+        GITHUB_TOKEN: ${{ secrets.IPLDBOT_GITHUB_TOKEN }}