chore(kuma-init): use distroless image

Signed-off-by: slonka <[email protected]>
Co-authored-by: Ilya Lobkov <[email protected]>

tools/releases/dockerfiles/kuma-init.Dockerfile

@@ -1,21 +1,14 @@
-# until there is a distroless iptables image we have to use something else
-FROM ubuntu:jammy-20240808@sha256:adbb90115a21969d2fe6fa7f9af4253e16d45f8d4c1e930182610c4731962658
+FROM gcr.io/k8s-staging-build-image/distroless-iptables:v0.1.2
 ARG ARCH
 
-RUN apt-get update && \
-    apt-get install --no-install-recommends -y iptables=1.8.7-1ubuntu5.2 iproute2=5.15.0-1ubuntu2 && \
-    rm -rf /var/lib/apt/lists/*
-
 COPY /build/artifacts-linux-$ARCH/kumactl/kumactl /usr/bin
 
 # this will be from a base image once it is done
 COPY /tools/releases/templates/LICENSE \
     /tools/releases/templates/README \
     /kuma/
 
-COPY /tools/releases/templates/NOTICE /kuma/NOTICE
-
-RUN adduser --system --disabled-password --group kumactl --uid 5678
+COPY /tools/releases/templates/NOTICE-kumactl /kuma/NOTICE
 
 ENTRYPOINT ["/usr/bin/kumactl"]
 CMD ["install", "transparent-proxy"]