Merge pull request #1231 from realshuting/update_CI

update master to main in CI automation files

.github/workflows/build.yaml

@@ -2,10 +2,10 @@ name: build
 on:
   push:
     branches:
-      - 'master'
+      - 'main'
   pull_request:
     branches:
-      - 'master'
+      - 'main'
 
 jobs:
   releaser:

.github/workflows/image.yaml

@@ -2,7 +2,7 @@ name: image
 on:
   push:
     branches:
-      - 'master'
+      - 'main'
 jobs:
   push-images:
     runs-on: ubuntu-latest

.github/workflows/test.yaml

@@ -2,10 +2,10 @@ name: test
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches:
-      - master
+      - main
 
 
 jobs: