Update docker.yml

Author: qiaofeng1227

.github/workflows/docker.yml

@@ -22,8 +22,7 @@ jobs:
         if: ${{ github.ref_name != 'main' }}
         run: |
          tmptag=${{ github.ref_name}}
-         arraytag=(${tmptag//./})
+         arraytag=(${tmptag//./ })
          TAGNAME=${arraytag[0]},${arraytag[0]}.${arraytag[1]},${{ github.ref_name}},latest
-         
          echo $TAGNAME