Here is the output I get with the commands included.
root@nso2:/etc/nso/nso-5.5# ./nso-5.5.linux.x86_64.installer.bin --local-install localinstall/
INFO Using temporary directory /tmp/ncs_installer.91602 to stage NCS installation bundle
INFO Unpacked ncs-5.5 in /etc/nso/nso-5.5/localinstall/
INFO Found and unpacked corresponding DOCUMENTATION_PACKAGE
INFO Found and unpacked corresponding EXAMPLE_PACKAGE
INFO Found and unpacked corresponding JAVA_PACKAGE
INFO Generating default SSH hostkey (this may take some time)
INFO SSH hostkey generated
INFO Environment set-up generated in /etc/nso/nso-5.5/localinstall//ncsrc
INFO NSO installation script finished
INFO Found and unpacked corresponding NETSIM_PACKAGE
./nso-5.5.linux.x86_64.installer.bin: 1: /etc/nso/nso-5.5/localinstall//bin/ncs_conf_tool: Exec format error
INFO NCS installation complete
root@nso2:/etc/nso/nso-5.5# cd localinstall/
root@nso2:/etc/nso/nso-5.5/localinstall# ll
total 1064
drwxrwxrwx 17 root root 4096 Jan 4 14:50 ./
drwxr-xr-x 3 root root 4096 Jan 4 13:49 ../
drwxr-xr-x 2 root root 4096 Dec 21 2020 bin/
-rw-r--r-- 1 root root 898147 Dec 21 2020 CHANGES
drwxr-xr-x 5 root root 4096 Dec 21 2020 doc/
drwxr-xr-x 4 root root 4096 Dec 21 2020 erlang/
drwxr-xr-x 3 root root 4096 Dec 21 2020 etc/
drwxr-xr-x 9 root root 4096 Dec 21 2020 examples.ncs/
drwxr-xr-x 2 root root 4096 Dec 21 2020 include/
drwxr-xr-x 3 root root 4096 Jan 4 14:50 java/
drwxr-xr-x 7 root root 4096 Dec 21 2020 lib/
-rw-r--r-- 1 root root 94792 Dec 21 2020 LICENSE
drwxr-xr-x 6 root root 4096 Dec 21 2020 man/
-rw-r--r-- 1 root root 553 Jan 4 14:50 ncsrc
-rw-r--r-- 1 root root 521 Jan 4 14:50 ncsrc.tcsh
drwxr-xr-x 3 root root 4096 Jan 4 14:50 netsim/
drwxr-xr-x 6 root root 4096 Dec 21 2020 packages/
-rw-r--r-- 1 root root 7155 Dec 21 2020 README
drwxr-xr-x 4 root root 4096 Dec 21 2020 scripts/
drwxr-xr-x 3 root root 4096 Dec 21 2020 src/
drwxr-xr-x 4 root root 4096 Dec 21 2020 support/
drwxr-xr-x 3 root root 4096 Dec 21 2020 var/
-rw-r--r-- 1 root root 409 Jan 4 14:50 VERSION
root@nso2:/etc/nso/nso-5.5/localinstall# source ncsrc
root@nso2:/etc/nso/nso-5.5/localinstall# ncs-setup --no-netsim --dest ncs-run/
root@nso2:/etc/nso/nso-5.5/localinstall# ll | grep ncs-run
drwxr-xr-x 7 root root 4096 Jan 4 15:05 ncs-run/
root@nso2:/etc/nso/nso-5.5/localinstall# ll ncs-run/
total 44
drwxr-xr-x 7 root root 4096 Jan 4 15:05 ./
drwxrwxrwx 18 root root 4096 Jan 4 15:05 ../
drwxr-xr-x 2 root root 4096 Jan 4 15:05 logs/
drwxr-xr-x 2 root root 4096 Jan 4 15:05 ncs-cdb/
-rw-r--r-- 1 root root 10021 Jan 4 15:05 ncs.conf
drwxr-xr-x 2 root root 4096 Jan 4 15:05 packages/
-rw-r--r-- 1 root root 622 Jan 4 15:05 README.ncs
drwxr-xr-x 4 root root 4096 Jan 4 15:05 scripts/
drwxr-xr-x 2 root root 4096 Jan 4 15:05 state/
root@nso2:/etc/nso/nso-5.5/localinstall# cd ncs-run
root@nso2:/etc/nso/nso-5.5/localinstall/ncs-run# ncs
/etc/nso/nso-5.5/localinstall//bin/ncs: 589: exec: /etc/nso/nso-5.5/localinstall/lib/ncs/erts/bin/ncsexec: Exec format error
root@nso2:/etc/nso/nso-5.5/localinstall/ncs-run#
