Proxmox post installation steps

Set sources for community updates

sudo rm -f /etc/apt/sources.list.d/pve-enterprise.list
sudo nano /etc/apt/sources.list
deb http://ftp.debian.org/debian buster main contrib
deb http://ftp.debian.org/debian buster-updates main contrib

# PVE pve-no-subscription repository provided by proxmox.com,
# NOT recommended for production use
deb http://download.proxmox.com/debian/pve buster pve-no-subscription

# security updates
deb http://security.debian.org/debian-security buster/updates main contrib

Update LXC templates list (including turnkey)

pveam update

Mounting local dirs to LXC container

/etc/pve/lxc/
nano /etc/pve/lxc/100.conf
mp0: /path/to/host/dir,mp=/path/to/lxc-ct/dir
unprivileged=1

Pass HDD to Virtual Machine

qm set 100 -scsi2 /dev/disk/by-id/ata-XXXXXXXXXX-XXXXXXXXXXXXX

Note on mounting NFS shares in LXC

# Install NFS client packages
sudo apt install nfs-common
nano /etc/fstab

# Add this line to file
host.myserver.com:/home /mnt/home nfs rw,hard,intr,rsize=8192,wsize=8192,timeo=14 0 0