From 795601085f232f021ef3c84d7a72b2b271deb8ea Mon Sep 17 00:00:00 2001
From: "Ivan I. Ovchinnikov" <ovchinnikov.ii@nstart.space>
Date: Wed, 6 May 2026 22:30:08 +0300
Subject: [PATCH] layers fix while resolving cert issue (rm #4447)

---
 Dockerfile.ubuntu | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Dockerfile.ubuntu b/Dockerfile.ubuntu
index 3f8bd86..0e8e166 100644
--- a/Dockerfile.ubuntu
+++ b/Dockerfile.ubuntu
@@ -3,7 +3,11 @@ ARG BASE_TAG="24.04"
 
 FROM ${BASE_REPO}ubuntu:${BASE_TAG}
 
-RUN apt update
-RUN apt install -y --no-install-recommends ca-certificates
+RUN <<EOF
+    set -eux
+    apt update
+    apt install -y --no-install-recommends ca-certificates
+    rm -rf /var/lib/apt/lists/*
+EOF
 
 COPY apt/ubuntu.sources /etc/apt/sources.list.d/ubuntu.sources