fix copybara config

.github/workflows/copybara.yaml

@@ -1,7 +1,7 @@
 name: Copybara
 
 on:
-  workflow_dispatch:
+#   workflow_dispatch:
   pull_request_target:
   push:
     branches: ["alternative-main"]
@@ -17,11 +17,17 @@ jobs:
           # Checkout as many commits as needed for the diff
           fetch-depth: 2
 
+      - name: Set up credentials files
+        # put the ssh_key and access_token in files
+        run: |
+            echo ${{ secrets.COPYBARA_SSH_KEY }} > $HOME/copybara_ssh_key
+            echo "https://user:${{ secrets.COPYBARA_PAT }}@github.com" > $HOME/copyabara_pat
+
       - name: Run Copybara
-        uses: olivr/copybara[email protected]
-        with:
-          ssh_key: ${{ secrets.COPYBARA_SSH_KEY }}
-          access_token: ${{ secrets.COPYBARA_PAT }}
-          custom_config: copy.bara.sky
-          workflow: default
-          copybara_options: ${{ github.event.number }} --force --init-history
+        # run copybara and pass in the credentials files
+        run: | 
+            docker run \
+            -v "$(pwd)":/usr/src/app \
+            -v $HOME/copybara_ssh_key:/root/.ssh/id_rsa \
+            -v $HOME/copybara_pat:/root/.git-credentials \
+            copybara copy.bara.sky default ${{ github.event.number }} --force --init-history

copy.bara.sky

@@ -12,6 +12,7 @@ core.workflow(
 
     destination = git.github_pr_destination(
         url = sbv3RepoUrl,
+        destination_ref = 'main',
     ),
     origin_files = glob([
       "javascript/on-demand/**",