feat: add update option

apps/website/public/install.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-
+install_dokploy() {
     if [ "$(id -u)" != "0" ]; then
         echo "This script must be run as root" >&2
         exit 1
@@ -11,7 +11,6 @@ if [ "$(uname)" = "Darwin" ]; then
         exit 1
     fi
 
-
     # check if is running inside a container
     if [ -f /.dockerenv ]; then
         echo "This script must be run on Linux" >&2
@@ -109,4 +108,23 @@ echo ""
     printf "${GREEN}Congratulations, Dokploy is installed!${NC}\n"
     printf "${BLUE}Wait 15 seconds for the server to start${NC}\n"
     printf "${YELLOW}Please go to http://${formatted_addr}:3000${NC}\n\n"
-echo ""
+}
+
+update_dokploy() {
+    echo "Updating Dokploy..."
+    
+    # Pull the latest image
+    docker pull dokploy/dokploy:latest
+
+    # Update the service
+    docker service update --image dokploy/dokploy:latest dokploy
+
+    echo "Dokploy has been updated to the latest version."
+}
+
+# Main script execution
+if [ "$1" = "update" ]; then
+    update_dokploy
+else
+    install_dokploy
+fi