From 6dc4809a0033bce69c97795f33a5997fc0d32a5a Mon Sep 17 00:00:00 2001
From: Ryoji Kurosawa <kuron99@users.noreply.github.com>
Date: Thu, 14 Nov 2024 10:46:55 +0900
Subject: [PATCH] docs: replace Ubuntu 18.04 with 22.04

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 63baccfed..8f42ed8f0 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ sudo apt update -y && sudo apt install -y $(cat build_tools/ubuntu.deps)
 ## Dockerfile
 
 ```dockerfile
-FROM ubuntu:18.04
+FROM ubuntu:22.04
 
 RUN apt update -y && apt install -y $(cat build_tools/ubuntu.deps)
 ```