From a762b4b4ae80c0f56e256d48cb075128d363199e Mon Sep 17 00:00:00 2001
From: Marukome0743 <akio.muto@bnt.benextgroup.jp>
Date: Thu, 3 Jul 2025 08:41:08 +0900
Subject: [PATCH] docs: update docker installation method of Ubuntu

---
 GUIDES.md | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/GUIDES.md b/GUIDES.md
index cfb7cd812..90fba522d 100644
--- a/GUIDES.md
+++ b/GUIDES.md
@@ -16,28 +16,29 @@ Here's how to install docker on different operating systems:
 ### Ubuntu
 
 ```bash
+# Uninstall old versions
+for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do sudo apt-get remove $pkg; done
+
 # Update package index
 sudo apt-get update
 
 # Install prerequisites
-sudo apt-get install \
-    apt-transport-https \
-    ca-certificates \
-    curl \
-    gnupg \
-    lsb-release
+sudo apt-get install ca-certificates curl
+sudo install -m 0755 -d /etc/apt/keyrings
 
 # Add Docker's official GPG key
-curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
+sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
+sudo chmod a+r /etc/apt/keyrings/docker.asc
 
-# Set up stable repository
+# Add the repository to Apt sources
 echo \
-  "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
-  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
+  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
+  $(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}") stable" | \
+  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
 
 # Install Docker Engine
 sudo apt-get update
-sudo apt-get install docker-ce docker-ce-cli containerd.io
+sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
 ```
 
 ## Windows