Add support for TMPDIR in install.sh #5284
Description
Is your feature request related to a problem? Please describe.
Currently the install.sh installer hard codes /tmp as the location that the binary packages and MacOS packages are downloaded to. This prevents the user from controlling where these files are downloaded.
Describe the solution you'd like
By using the POSIX standard TMPDIR environment variable, instead of /tmp, the user can control where these files are written.