A simple dvc config file for a shared cache, as well as sample commands to create and assign appropriate groups for the cache folder

dvc-config

[core]
    analytics = false
    remote = remote_storage
[cache]
    dir = /srv/dvc-cache
    shared = group
    type = symlink
['remote "remote_storage"']
    url = gs://my-dvc-shared-bucket/dvc-cache-folder

dvc-shared-cache-create.sh

sudo groupadd dvccache
sudo mkdir /srv/dvc-cache
sudo chgrp dvccache /srv/dvc-cache
sudo chmod 775 /srv/dvc-cache
sudo chmod g+s /srv/dvc-cache

sudo usermod -a -G dvccache $USER