diff --git a/init_root.sh b/init_root.sh
index 953591e..62b374c 100755
--- a/init_root.sh
+++ b/init_root.sh
@@ -23,6 +23,16 @@ git_clone() {
     fi
 }
 
+update_file() {
+    local A="$1"
+    local B="$2"
+
+    if [ -f "$A" ] && [ -f "$B" ] && [ "$(cat "$A")" != "$(cat "$B")" ]; then
+        cp "$A" "$B"
+        echo "File $B has been updated."
+    fi
+}
+
 # ============================================================
 
 check_google_access() {
@@ -40,6 +50,10 @@ check_google_access() {
     fi
 }
 
+update_files() {
+    update_file $scriptdir/files/ys-simple.zsh-theme ~/.oh-my-zsh/themes/ys-simple.zsh-theme
+}
+
 configure_ssh() {
     [ -f ~/.ssh/authorized_keys ] && return
 
@@ -232,7 +246,18 @@ configure_git() {
     fi
 }
 
+configure_docker() {
+    [ -f /etc/docker/daemon.json ] && return
+
+    read -p "要配置 Docker (Rootless mode) 吗？[N]: " response
+
+    if [[ $response =~ ^[Yy]$ ]]; then
+        cp $scriptdir/files/docker-rootless-daemon.json /etc/docker/daemon.json
+    fi
+}
+
 check_google_access
+update_files
 configure_ssh
 configure_ssh_keygen
 configure_nano
@@ -248,3 +273,4 @@ configure_timedate
 configure_fail2ban
 configure_miniconda
 configure_git
+# configure_docker
diff --git a/init_sudo.sh b/init_sudo.sh
index f97bb58..0d69055 100755
--- a/init_sudo.sh
+++ b/init_sudo.sh
@@ -28,6 +28,16 @@ git_clone() {
     fi
 }
 
+update_file() {
+    local A="$1"
+    local B="$2"
+
+    if [ -f "$A" ] && [ -f "$B" ] && [ "$(cat "$A")" != "$(cat "$B")" ]; then
+        cp "$A" "$B"
+        echo "File $B has been updated."
+    fi
+}
+
 # ============================================================
 
 check_google_access() {
@@ -45,6 +55,10 @@ check_google_access() {
     fi
 }
 
+update_files() {
+    update_file $scriptdir/files/ys-simple.zsh-theme ~/.oh-my-zsh/themes/ys-simple.zsh-theme
+}
+
 configure_ssh() {
     [ -f ~/.ssh/authorized_keys ] && return
 
@@ -238,7 +252,18 @@ configure_git() {
     fi
 }
 
+configure_docker_rootless() {
+    [ -f ~/.config/docker/daemon.json ] && return
+
+    read -p "要配置 Docker (Rootless mode) 吗？[N]: " response
+
+    if [[ $response =~ ^[Yy]$ ]]; then
+        cp $scriptdir/files/docker-rootless-daemon.json ~/.config/docker/daemon.json
+    fi
+}
+
 check_google_access
+update_files
 configure_ssh
 configure_ssh_keygen
 configure_nano
@@ -254,3 +279,4 @@ configure_timedate
 configure_fail2ban
 configure_miniconda
 configure_git
+# configure_docker_rootless