Merge pull request #8785 from mboersma/silence-dockerfile-warning

Silence docker build warning about mixed case

Author: k8s-ci-robot

cluster-autoscaler/Dockerfile

@@ -11,7 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM --platform=$BUILDPLATFORM golang:1.24 as builder
+FROM --platform=$BUILDPLATFORM golang:1.24 AS builder
 
 WORKDIR /workspace