Fix sync-rc.yml (autowarefoundation#402)

Signed-off-by: Kenji Miyake <[email protected]>

.github/workflows/sync-rc.yml

@@ -7,10 +7,13 @@ on:
     types:
       - closed
   workflow_dispatch:
+    inputs:
+      rc_branch:
+        description: "Target RC branch(e.g. rc/v1.0.0)"
+        required: true
 
 env:
   BASE_BRANCH: main
-  SYNC_BRANCH: sync-rc
 
 jobs:
   sync-rc:
@@ -30,15 +33,37 @@ jobs:
           app_id: ${{ secrets.APP_ID }}
           private_key: ${{ secrets.APP_PRIVATE_KEY }}
 
-      - name: Set SYNC_TARGET_BRANCH
+      - name: Set SYNC_TARGET_BRANCH for pull_request event
+        if: github.event_name == 'pull_request'
         run: |
-          echo "SYNC_TARGET_BRANCH=${{ github.head_ref }}" >> $GITHUB_ENV
+          echo "SYNC_TARGET_BRANCH=${{ github.base_ref }}" >> $GITHUB_ENV
+
+      - name: Set SYNC_TARGET_BRANCH for workflow_dispatch event
+        if: github.event_name == 'workflow_dispatch'
+        run: |
+          echo "SYNC_TARGET_BRANCH=${{ github.event.inputs.rc_branch }}" >> $GITHUB_ENV
+
+      - name: Set SYNC_BRANCH
+        run: |
+          echo ${SYNC_TARGET_BRANCH} | grep -e "^rc/v.*"
+          echo "SYNC_BRANCH=sync-rc/${SYNC_TARGET_BRANCH#refs/heads/}" >> $GITHUB_ENV
 
       # To keep the base branch in "create-pull-request", checkout with "BASE_BRANCH" and reset to "SYNC_TARGET_BRANCH"
       - name: Reset to sync target branch
         run: |
           git reset --hard origin/${{ env.SYNC_TARGET_BRANCH }}
 
+      - name: Set git config
+        run: |
+          git config --local user.email "[email protected]"
+          git config --local user.name "Github Actions"
+
+      - name: Rebase on the base branch
+        run: |
+          for commit in $(git rev-list --left-only origin/${{ env.BASE_BRANCH }}...HEAD | tac); do
+            git rebase $commit || git rebase --abort
+          done
+
       - name: Create PR
         id: create_pr
         uses: peter-evans/create-pull-request@v3
@@ -69,4 +94,4 @@ jobs:
         with:
           token: ${{ steps.generate-token.outputs.token }}
           pull-request-number: ${{ steps.create_pr.outputs.pull-request-number }}
-          merge-method: merge
+          merge-method: squash