Add checkout-from parameter for composite action (#2241)

#### What type of PR is this?

/kind bug

#### What this PR does / why we need it:

Add checkout-from parameter for composite action. Please see <a801af5be5/README.md>.

If we don't set the parameter for the action, it will checkout from `default branch` to build docker image. You can see <https://github.com/halo-dev/halo/runs/7316162265?check_suite_focus=true#step:2:478>.

#### Which issue(s) this PR fixes:

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Fixes #

#### Special notes for your reviewer:

#### Does this PR introduce a user-facing change?

```release-note
None
```

.github/workflows/halo.yaml

@@ -2,12 +2,16 @@ name: Halo CI
 
 on:
   pull_request:
+    branches:
+      - next
+      - main
     paths:
       - "**"
       - "!**.md"
   push:
     branches:
-      - "**"
+      - next
+      - main
     paths:
       - "**"
       - "!**.md"
@@ -54,3 +58,4 @@ jobs:
           image-name: halodev
           ghcr-token: ${{ secrets.GHCR_TOKEN }}
           push: ${{ github.event_name == 'push' && github.event.ref == 'refs/heads/next' }} # we only push to GHCR if the push is to the next branch
+          checkout-from: ${{ github.ref }}