diff --git a/doc/NR_SA_Tutorial_OAI_CN5G.md b/doc/NR_SA_Tutorial_OAI_CN5G.md
index 8573391b67..5e6ad3fdbb 100644
--- a/doc/NR_SA_Tutorial_OAI_CN5G.md
+++ b/doc/NR_SA_Tutorial_OAI_CN5G.md
@@ -32,11 +32,14 @@ Minimum hardware requirements:
 ```bash
 sudo apt install -y git net-tools putty
 
-sudo apt install -y apt-transport-https ca-certificates curl software-properties-common
-curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
-sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu  $(lsb_release -cs)  stable"
+# https://docs.docker.com/engine/install/ubuntu/
+sudo apt install -y ca-certificates curl gnupg
+sudo install -m 0755 -d /etc/apt/keyrings
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
+sudo chmod a+r /etc/apt/keyrings/docker.gpg
+echo "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
 sudo apt update
-sudo apt install -y docker docker-ce
+sudo apt install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
 
 # Add your username to the docker group, otherwise you will have to run in sudo mode.
 sudo usermod -a -G docker $(whoami)