Podman on RHEL 8 running out of space during import - rhel

Question

I am having issues with Podman running out of space when importing. This is happening on a RHEL 8 VM that has been deployed for our group. We do have a 80GB /docker partition available, but I am missing some Podman configuration that says to use /docker. This VM
Can you all help me identify?
Here is part of my /etc/containers/storage.conf:
[storage]
# Default Storage Driver, Must be set for proper operation.
driver = "overlay"
# Temporary storage location
runroot = "/docker/temp"
# Primary Read/Write location of container storage
# When changing the graphroot location on an SELINUX system, you must
# ensure the labeling matches the default locations labels with the
# following commands:
# semanage fcontext -a -e /var/lib/containers/storage /NEWSTORAGEPATH
# restorecon -R -v /NEWSTORAGEPATH
# graphroot = "/var/lib/containers/storage"
graphroot = "/docker"
We are running SELinux, so I did run these commands:
semanage fcontext -a -e /var/lib/containers/storage /docker
restorecon -R -v /docker
and restart the podman service. However, if I run
podman import docker.tar
We receive the error:
Getting image source signatures
Copying blob 848eb673668a [=>------------------------------------] 1.8GiB / 41.3GiB
Error: writing blob: storing blob to file "/var/tmp/storage2140624383/1": write /var/tmp/storage2140624383/1: no space left on device
df -H shows:
Filesystem Size Used Avail Use% Mounted on
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 84K 3.9G 1% /dev/shm
tmpfs 3.9G 9.3M 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/mapper/rhel_rhel86--svr-root 38G 7.2G 31G 20% /
/dev/mapper/rhel_rhel86--svr-tmp 4.7G 66M 4.6G 2% /tmp
/dev/mapper/rhel_rhel86--svr-home 43G 1.4G 42G 4% /home
/dev/sda2 495M 276M 220M 56% /boot
/dev/sdb1 79G 42G 33G 56% /docker
/dev/sda1 500M 5.9M 494M 2% /boot/efi
/dev/mapper/rhel_rhel86--svr-var 33G 1.6G 32G 5% /var
/dev/mapper/rhel_rhel86--svr-var_log 4.7G 109M 4.6G 3% /var/log
/dev/mapper/rhel_rhel86--svr-var_tmp 1.9G 47M 1.9G 3% /var/tmp
/dev/mapper/rhel_rhel86--svr-var_log_audit 9.4G 132M 9.2G 2% /var/log/audit
tmpfs 785M 8.0K 785M 1% /run/user/42
tmpfs 785M 0 785M 0% /run/user/1000
Do you guys know what I'm missing to tell Podman to use /docker instead of /var/tmp/storage2140624383 ?
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Edited December 29:
I was able to change the tmpdir to /docker. However, upon import of this 54GB docker.tar file, it is still telling me I am running out of space. We were able to import a small .tar (around 800MB) successfully, so we know podman is working.
$ podman import docker.tar
Getting image source signatures
Copying blob b45265b317a7 done
Error: writing blob: adding layer with blob "sha256:b45265b317a7897670ff015b177bac7b9d5037b3cfb490d3567da959c7e2cf70": Error processing tar file(exit status 1): write /a65be6ac39ddadfec332b73d772c49d5f1b4fffbe7a3a419d00fd58fcb4bb752/layer.tar: no space left on device

Answer 1

This might be a pretty easy one:
Copying blob 848eb673668a [=>------------------------------------] 1.8GiB / 41.3GiB
vs
/dev/mapper/rhel_rhel86--svr-var_tmp 1.9G 47M 1.9G 3% /var/tmp
As you can see, the image will not fit into the desired temp space directory.
This is somewhat explained in the docs, which states, you can adjust this by changing the TMPDIR environment variable.