Is it possible to change the directory that mkrescue uses? as some of the server we have noexec on /tmp

[moonSymph]

Relax-and-Recover (ReaR) Issue Template

Is it possible to change the directory that mkrescue uses? as some of the server we have noexec on /tmp #2418

Fill in the following items before submitting a new issue
(quick response is not guaranteed with free support):

• ReaR version ("/usr/sbin/rear -V"):

• OS version ("cat /etc/os-release" or "lsb_release -a" or "cat /etc/rear/os.conf"):
  Rhel 6.10

• ReaR configuration files ("cat /etc/rear/site.conf" and/or "cat /etc/rear/local.conf"):

• Hardware (PC or PowerNV BareMetal or ARM) or virtual machine (KVM guest or PoverVM LPAR):

• System architecture (x86 compatible or PPC64/PPC64LE or what exact ARM device):
  x86

• Firmware (BIOS or UEFI or Open Firmware) and bootloader (GRUB or ELILO or Petitboot):

• Storage (local disk or SSD) and/or SAN (FC or iSCSI or FCoE) and/or multipath (DM or NVMe):

• Storage layout ("lsblk -ipo NAME,KNAME,PKNAME,TRAN,TYPE,FSTYPE,SIZE,MOUNTPOINT" or "lsblk" as makeshift):

• Description of the issue (ideally so that others can reproduce it):

• Workaround, if any:

• Attachments, as applicable ("rear -D mkrescue/mkbackup/recover" debug log files):

To paste verbatim text like command output or file content,
include it between a leading and a closing line of three backticks like

```
verbatim content
```

[jsmeix]

see TMPDIR in default.conf
https://github.com/rear/rear/blob/master/usr/share/rear/conf/default.conf#L44