fix for RHEL8 nodes

[Victoremepunto]

• change paths to avoid writing to the to the root filesystem
• shellcheck formatting

[wcmitchell]

👍 Looks good to me! I'm assuming that pr_check.sh will run in the context of $HOME so it hits the right ~/container_workspace dir even though we don't explicitly cd there as we do in pr_check_inner.sh

[Victoremepunto]

👍 Looks good to me! I'm assuming that pr_check.sh will run in the context of $HOME so it hits the right ~/container_workspace dir even though we don't explicitly cd there as we do in pr_check_inner.sh

I'm changing it to be $HOME/container_workspace (from /container_workspace) so that the (non-root) user is able to write (and create) that dir. All references to this new directory are changed to that effect (if something still refers to it by its absolute location it will fail)