AMD/ROCm: update base image string (#4137)

Co-authored-by: wunhuang <wunhuang@amd.com>
Co-authored-by: yichiche <yichiche@amd.com>

docker/Dockerfile.rocm

@@ -2,7 +2,7 @@
 #   docker build --build-arg SGL_BRANCH=v0.4.3.post3 -t v0.4.3.post3-rocm630 -f Dockerfile.rocm .
 
 # default base image
-ARG BASE_IMAGE="rocm/vllm-dev:20250114"
+ARG BASE_IMAGE="rocm/sgl-dev:vllm20250114"
 
 FROM $BASE_IMAGE AS base
 USER root