When I was setting up some services for my homelab on my Proxmox machine, I was entering the same commands multiple times. So I wrote them down here to be able to quickly enter them again.

Create user with home directory and bash as shell

        
          sudo useradd -m -s /bin/bash username
        
      

Set password of new user

        
          sudo passwd username
        
      

Add user to sudo group

        
          sudo usermod -aG sudo username
        
      

Enable networking

Edit the file /etc/network/interfaces and add the contents:

        
          auto lo
          iface lo inet loopback

          auto eth0
          iface eth0 inet dhcp
        
        

Then restart the networking service:

        
          sudo service networking restart
        
        

Ubuntu 24.04 container

Ubuntu 24.04 uses netplan and the above setup will not work. To get internet to work, use these commands:

          
            sudo nano /etc/netplan/00-installer-config.yaml
          
          

Change the contents to:

            
              network:
                version: 2
                ethernets:
                  eth0:
                    dhcp4: true
                    dhcp6: false
                    optional: true
                    nameservers:
                      addresses:
                        - 10.10.10.102
            
          

Then apply:

            
              sudo netplan apply