Azure Container Instances disk space pricing
When an Azure Container Instance is launched it has an amount of disk space available to the container. You have no control over this and are not explicitly charged for it.
Having just ran this command
az container create --image node:8.9.3-alpine -g "Test1" \ -n test1 --command-line 'df -h'
The response shows...
Filesystem Size Used Available Use% Mounted onoverlay 48.4G 2.8G 45.6G 6% /tmpfs 958.9M 0 958.9M 0% /devtmpfs 958.9M 0 958.9M 0% /sys/fs/cgroup/dev/sda1 48.4G 2.8G 45.6G 6% /dev/termination-logtmpfs 958.9M 4.0K 958.9M 0% /var/aci_metadata/dev/sda1 48.4G 2.8G 45.6G 6% /etc/resolv.conf/dev/sda1 48.4G 2.8G 45.6G 6% /etc/hostname/dev/sda1 48.4G 2.8G 45.6G 6% /etc/hostsshm 64.0M 0 64.0M 0% /dev/shmtmpfs 958.9M 0 958.9M 0% /proc/kcoretmpfs 958.9M 0 958.9M 0% /proc/timer_listtmpfs 958.9M 0 958.9M 0% /proc/timer_statstmpfs 958.9M 0 958.9M 0% /proc/sched_debug
So you should have 48gb of disk space to play with.
(I tried to test this with a Win Image, but got hit by a bug trying to get the information out)