[ROCM] Add ROCm image build to release pipeline (#31995)

Signed-off-by: Doug Lehr <douglehr@amd.com>
Co-authored-by: Doug Lehr <douglehr@amd.com>

docker/Dockerfile.rocm

@@ -235,3 +235,7 @@ ENV KINETO_CONFIG="${COMMON_WORKDIR}/libkineto.conf"
 RUN echo "VLLM_BASE_IMAGE=${BASE_IMAGE}" >> ${COMMON_WORKDIR}/versions.txt
 
 CMD ["/bin/bash"]
+
+#Set entrypoint for vllm-openai official images
+FROM final As vllm-openai
+ENTRYPOINT ["vllm", "serve"]