Sure, here is a simple container with grafana installation:
arch: amd64
cores: 1
hostname: Grafana
memory: 128
net0: name=eth0,bridge=vmbr0,firewall=1,hwaddr=AE:D7:85:02:0C:0F,ip=dhcp,type=veth
onboot: 1
ostype: debian
rootfs: Containers:subvol-107-disk-1,size=4G
swap: 128
unprivileged: 1
Here...