Fix workflow version read newline issue

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.github/workflows/build.yaml

@@ -21,9 +21,7 @@ jobs:
 
     - name: Retrieve version # tag version
       id: img-ver
-      uses: juliangruber/read-file-action@v1
+      run: echo "content=$(cat ./version | tr -d '\n')" >> $GITHUB_OUTPUT
-      with:
-        path: ./version
 
     - name: Install Docker // Docker 설치
       run: |