Add bash-completion support for the tools being installed.

@@ -35,7 +35,7 @@ FROM debian:bookworm-20241223-slim AS host-base-tools
 
 RUN	true && \
 	apt-get update && \
-	apt-get install -y git libgpgme11 libsubid4 libdevmapper1.02.1 && \
+	apt-get install -y bash-completion git libgpgme11 libsubid4 libdevmapper1.02.1 && \
 	adduser tool && \
 	getent passwd && \
 	apt-get clean && \
@@ -96,6 +96,11 @@ RUN	true && set -x && \
 	tar -zxvf /srv/kustomize_linux_amd64.tar.gz && \
 	mv kustomize /usr/local/bin/kustomize && \
 	cd .. && rm -rf install && \
+	helm completion bash > /etc/bash_completion.d/helm && \
+	istioctl completion bash > /etc/bash_completion.d/istioctl && \
+	kubectl completion bash > /etc/bash_completion.d/kubectl && \
+	kustomize completion bash > /etc/bash_completion.d/kustomize && \
+	skopeo completion bash > /etc/bash_completion.d/skopeo && \
 	true
 
 USER	tool:tool
@@ -118,5 +123,6 @@ FROM host-base-tools AS final-output
 COPY --from=host-build-tools /home/tool/ /home/tool/ 
 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/
 COPY entrypoint.sh /usr/local/sbin/entrypoint.sh
 ENTRYPOINT ["entrypoint.sh"]