diff --git a/setup-docker b/setup-docker
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+# Description:
+# This script will help the user to setup rootless docker[1] on CMLab Server.
+# We follow our CMLab's rootless docker guideline[2] to build the environment:
+# 
+# We will add the user's username into subuid & subgid so that the docker service
+# can start the containers. Then we run the script provided by docker to install
+# rootless docker's service.
+# 
+# After checking whether the docker service can start, we should allow Docker
+# can access NVIDIA Container Runtime so that our Docker container can use GPUs.
+#
+# Then, we should change the directory of Docker to /tmp2 so that Docker can save
+# images.
+#
+# [1] rootless docker's documentation: https://docs.docker.com/engine/security/rootless/
+# [2] CMLab's rootless docker guideline: https://hackmd.io/@snsd0805/SkWMyB1ER
+
+echo -e -n "\033[44m[CML INFO]\033[0m "
+echo "Start setting up Docker service"
+
+# insert the username into /etc/subuid & /etc/subuid
+# setup-uid's source code is on https://gitea.snsd0805.com/snsd0805/CMLAB-Docker-Builder/src/branch/master/tool/setup_uid.c
+setup-uid
+
+if [ $? -eq 0 ]; then
+	echo -e -n "\033[44m[CML INFO]\033[0m "
+	echo "Inserted $(whoami) into /etc/subuid & /etc/subgid"
+else
+	echo -e -n "\033[41m[CML ERROR]\033[0m "
+	echo "failed to set subuid & subgid. Please contact us: unix_manager@cmlab.csie.ntu.edu.tw"
+	exit 1
+fi
+
+
+# Run install script provided by docker
+curl -fsSL https://get.docker.com/rootless | DOCKER_BIN=/tmp2/$(whoami)/docker/bin sh
+if [ $? -eq 0 ]; then
+	echo -e -n "\033[44m[CML INFO]\033[0m "
+	echo "Docker installed."
+else
+	echo -e -n "\033[41m[CML ERROR]\033[0m "
+	echo "failed to install rootless docker. Please contact us: unix_manager@cmlab.csie.ntu.edu.tw"
+	exit 1
+fi
+
+echo "export PATH=/tmp2/$(whoami)/docker/bin:\$PATH" >> ~/.bashrc
+echo "export DOCKER_HOST=unix:///run/user/$(id -u)/docker.sock" >> ~/.bashrc
+echo -e -n "\033[44m[CML INFO]\033[0m "
+echo "We have some environment variables in your ~/.bashrc"
+
+# Link NVIDIA Container Runtime to Docker & change docker image's path
+mkdir /tmp2/$(whoami)/docker-data
+cat << EOF > $HOME/.config/docker/daemon.json
+{
+    "runtimes": {
+        "nvidia": {
+            "args": [],
+            "path": "nvidia-container-runtime"
+        }
+    },
+    "data-root": "/tmp2/$(whoami)/docker-data"
+}
+EOF
+if [ $? -eq 0 ]; then
+	echo -e -n "\033[44m[CML INFO]\033[0m "
+	echo "Linked NVIDIA Container Runtime & changed the data path."
+else
+	echo -e -n "\033[41m[CML ERROR]\033[0m "
+	echo "failed to link NVIDIA Container Runtime to Docker. Please contact us: unix_manager@cmlab.csie.ntu.edu.tw"
+	exit 1
+fi
+
+# restart docker
+echo -e -n "\033[44m[CML INFO]\033[0m "
+echo "Restarting Docker..."
+
+systemctl --user restart docker && docker pull ubuntu && docker run --rm --runtime=nvidia --gpus '"device=0,1"' ubuntu:22.04 nvidia-smi
+
+echo -e -n "\033[44m[CML INFO]\033[0m "
+echo "These are 2 GPUs on this server."
+
+
+
+
+
+
+
+