Add docker and docker-buildx.

+ARG DOCKER_VERSION=26.1.3
+FROM docker:${DOCKER_VERSION} AS docker-remote
+
+FROM scratch AS docker-buildx-remote
+ARG DOCKER_BUILDX_VERSION=0.20.1
+ADD https://github.com/docker/buildx/releases/download/v0.20.1/buildx-v0.20.1.linux-amd64 /srv/docker-buildx
+
 FROM scratch AS helm-remote
 ARG HELM_VERSION=3.16.4
 ADD https://get.helm.sh/helm-v${HELM_VERSION}-linux-amd64.tar.gz /srv/helm-linux-amd64.tar.gz
@@ -65,6 +72,8 @@ RUN	true && set -x && \
 	true
 
 FROM host-base-tools AS host-build-tools
+COPY --from=docker-remote /usr/local/bin/docker /usr/local/bin/docker
+COPY --from=docker-buildx-remote /srv/docker-buildx /usr/libexec/docker/cli-plugins/docker-buildx
 COPY --from=helm-remote /srv/helm-linux-amd64.tar.gz /srv/helm-linux-amd64.tar.gz
 COPY --from=helm-diff-remote /srv/helm-diff-linux-amd64.tgz /srv/helm-diff-linux-amd64.tgz
 COPY --from=helm-git-remote /srv/helm-git.tar.gz /srv/helm-git.tar.gz
@@ -77,6 +86,7 @@ COPY --from=kustomize-remote /srv/kustomize_linux_amd64.tar.gz /srv/kustomize_li
 COPY --from=skopeo-compiled /usr/local/bin/skopeo /usr/local/bin/skopeo
 
 RUN	true && set -x && \
+	chmod +x /usr/libexec/docker/cli-plugins/docker-buildx && \
 	chown tool:tool /srv/* && \
 	chmod +x /usr/local/bin/kubectl && \
 	cd /tmp && \
@@ -96,6 +106,7 @@ RUN	true && set -x && \
 	tar -zxvf /srv/kustomize_linux_amd64.tar.gz && \
 	mv kustomize /usr/local/bin/kustomize && \
 	cd .. && rm -rf install && \
+	docker completion bash > /etc/bash_completion.d/docker && \
 	helm completion bash > /etc/bash_completion.d/helm && \
 	istioctl completion bash > /etc/bash_completion.d/istioctl && \
 	kubectl completion bash > /etc/bash_completion.d/kubectl && \
@@ -121,6 +132,7 @@ RUN	true && set -x && \
 
 FROM host-base-tools AS final-output
 COPY --from=host-build-tools /home/tool/ /home/tool/ 
+COPY --from=host-build-tools /usr/libexec/docker/cli-plugins/ /usr/libexec/docker/cli-plugins/
 COPY --from=host-build-tools /usr/local/bin/ /usr/local/bin/
 COPY --from=host-build-tools /usr/local/sbin/ /usr/local/sbin/
 COPY --from=host-build-tools /etc/bash_completion.d/ /etc/bash_completion.d/

@@ -39,6 +39,7 @@ declare -a docker_args=(--rm -i)
 
 docker_args+=(-v /:/srv/host-root)
 docker_args+=(-w /srv/host-root/$PWD)
+[[ -S /var/run/docker.sock ]] && docker_args+=(-v /var/run/docker.sock:/var/run/docker.sock)
 [[ $SSH_AUTH_SOCK ]] && docker_args+=(-e "SSH_AUTH_SOCK=/srv/host-root/$SSH_AUTH_SOCK")
 network=
 if [[ $KUBECONFIG ]]; then