Loading packer plug-ins issue

As part of using the packer plug-in for Jenkins I am attempting to load a packer plug-in (https://github.com/jetbrains-infra/packer-builder-vsphere) prior to running the packer build.

I am downloading and making the plug-in executable as an Execute shell command:

`curl "https://github.com/jetbrains-infra/packer-builder-vsphere/releases/download/v1.5/packer-builder-vsphere.linux" > "packer-builder-vsphere.linux"

chmod +x /var/lib/jenkins/jobs/accosia3/workspace/packer-builder-vsphere.linux
ls -l`

This works as expected:

`+ pwd

/var/lib/jenkins/jobs/accosia3/workspace

+ curl https://github.com/jetbrains-infra/packer-builder-vsphere/releases/download/v1.5/packer-builder-vsphere.linux

% Total % Received % Xferd Average Speed Time Time Time Current

Dload Upload Total Spent Left Speed

0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
100 618 0 618 0 0 535 0 --:--:-- 0:00:01 --:--:-- 535

+ chmod +x /var/lib/jenkins/jobs/accosia3/workspace/packer-builder-vsphere.linux

+ ls -l

total 52

-rw-r--r-- 1 default root 499 Mar 13 10:08 notes.txt

-rw-r--r-- 1 default root 1187 Mar 13 10:08 packer2.json

-rw-r--r-- 1 default root 2220 Mar 13 10:08 packer3.json

-rw-r--r-- 1 default root 158 Mar 13 10:08 packer4.json

-rwxr-xr-x 1 default root 618 Mar 13 10:17 packer-builder-vsphere.linux

-rw-r--r-- 1 default root 730 Mar 13 10:08 packer.json

-rw-r--r-- 1 default root 101 Mar 13 10:08 playbook.yml

-rw-r--r-- 1 default root 430 Mar 13 10:08 README.md

-rw-r--r-- 1 default root 1692 Mar 13 10:08 RHEL-6-8.1.json

-rw-r--r-- 1 default root 1528 Mar 13 10:08 RHEL-6-8.json

drwxr-xr-x 2 default root 4096 Mar 13 10:08 scripts

-rw-r--r-- 1 default root 271 Mar 13 10:08 test.json

-rw-r--r-- 1 default root 1283 Mar 13 10:08 vsphere.json

`
However when Packer build runs I get this error:

`[workspace] $ /var/lib/jenkins/tools/biz.neustar.jenkins.plugins.packer.PackerInstallation/packer/packer build /var/lib/jenkins/jobs/accosia3/workspace/vsphere.json

Failed to initialize build 'vsphere': error initializing builder 'vsphere': fork/exec /var/lib/jenkins/jobs/accosia3/workspace/packer-builder-vsphere.linux: exec format error`

I have tested the packer plug-in locally and it works fine

Start by reproducing the Packer build using vsphere.json after the Execute shell download and permission commands. Inspect the downloaded packer-builder-vsphere.linux artifact and the Jenkins/Packer execution environment; done means the vsphere builder initializes successfully instead of reporting an exec format error.

Written by the indexing model from the issue text.