I ran the apt-get install -y curl on the node, then stopped and removed the container then reran the script in the node and it installed and is working.
Creating an LLDAP (Lightweight LDAP) LXC (Linux Container) script in Proxmox facilitates efficient directory services management. This setup enhances resource utilization and simplifies user authentication processes. LXC containers are lightweight, allowing for quick deployment and scaling, making it easy to run LLDAP in an isolated environment. Ensure your script is properly configured and includes backup and security measures to protect your directory data.