Add istioctl.

@@ -23,6 +23,10 @@ ARG KUSTOMIZE_VERSION=3.8.10
 #ARG KUSTOMIZE_VERSION=5.5.0
 ADD https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv${KUSTOMIZE_VERSION}/kustomize_v${KUSTOMIZE_VERSION}_linux_amd64.tar.gz /srv/kustomize_linux_amd64.tar.gz
 
+FROM scratch AS istioctl-remote
+ARG ISTIOCTL_VERSION=1.15.0
+ADD https://github.com/istio/istio/releases/download/${ISTIOCTL_VERSION}/istio-${ISTIOCTL_VERSION}-linux-amd64.tar.gz /srv/istioctl-linux-amd64.tar.gz
+
 FROM scratch AS skopeo-remote
 ARG SKOPEO_VERSION=1.15.0
 ADD https://github.com/containers/skopeo/archive/refs/tags/v${SKOPEO_VERSION}.tar.gz /srv/skopeo.tar.gz
@@ -67,6 +71,7 @@ COPY --from=helm-git-remote /srv/helm-git.tar.gz /srv/helm-git.tar.gz
 COPY --from=helmfile-remote /srv/helmfile_linux_amd64.tar.gz /srv/helmfile_linux_amd64.tar.gz
 COPY --from=kubectl-remote /srv/kubectl /usr/local/bin/kubectl
 COPY --from=kustomize-remote /srv/kustomize_linux_amd64.tar.gz /srv/kustomize_linux_amd64.tar.gz
+COPY --from=istioctl-remote /srv/istioctl-linux-amd64.tar.gz /srv/istioctl-linux-amd64.tar.gz
 
 # requires: libgpgme11 libsubid4 libdevmapper1.02.1
 COPY --from=skopeo-compiled /usr/local/bin/skopeo /usr/local/bin/skopeo
@@ -84,6 +89,10 @@ RUN	true && set -x && \
 	mv helmfile /usr/local/bin/helmfile && \
 	cd .. && rm -rf install && \
 	mkdir install && cd install && \
+	tar -zxvf /srv/istioctl-linux-amd64.tar.gz && \
+	ls istio-*/bin/ && \
+	mv istio-*/bin/istioctl /usr/local/bin/istioctl && \
+	cd .. && rm -rf install && \
 	tar -zxvf /srv/kustomize_linux_amd64.tar.gz && \
 	mv kustomize /usr/local/bin/kustomize && \
 	cd .. && rm -rf install && \
@@ -98,6 +107,7 @@ RUN	true && set -x && \
 	tar -C $HELM_PLUGINS -xf /srv/helm-git.tar.gz && \
 	helm version && helm plugin list && \
 	helmfile version && \
+	istioctl version --remote=false && \
 	skopeo -v && \
 	mkdir -p .config/kustomize/plugin && \
 	mkdir .ssh && chmod 700 .ssh && \