added amd64 image in dockerfile

Author: sandeepgupta12

.github/scripts/s390x-ci/self-hosted-builder/actions-runner.Dockerfile

@@ -1,3 +1,10 @@
+# Self-Hosted IBM Power Github Actions Runner.
+
+# Temporary image: amd64 dependencies.
+FROM docker.io/amd64/ubuntu:23.10 as ld-prefix
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt-get update && apt-get -y install ca-certificates libicu72 libssl3
+
 # Stage 1: Main image for ppc64le Ubuntu
 FROM --platform=linux/ppc64le ubuntu:22.04