[client] Restart netbird-ui post-install in linux deb&rpm

[mohamed-essam]

Describe your changes

Add post-install script to netbird-ui deb and rpm packages to restart process if running.

Issue ticket number and link

Checklist

• Is it a bug fix
• Is a typo/documentation fix
• Is a feature enhancement
• It is a refactor
• Created tests that fail without the change (if possible)
• Extended the README / documentation, if necessary

[mgarces]

Hi @mohamed-essam , thank you for this contribution.
Can you share how you tested this changes? I've tested both rpm and deb assets, both on an Ubuntu Desktop 22.04 and on Fedora Desktop 41, and this didn't work at all; just want to make sure I can replicate your steps.
Also, on Ubuntu, I got the following output:

/var/lib/dpkg/info/netbird-ui.postinst: 4 [[: not found 

I think this is due the script using /bin/sh as a shebang, which typically points to a more minimal shell. However, it uses [[ ... ]], which is a feature of bash and not POSIX-compliant. This can cause the script to fail on systems where /bin/sh is not linked to bash. To fix this, you should either change the shebang to #!/bin/bash or use POSIX-compliant [ ... ].

[mohamed-essam]

Ah yes thanks, sorry I missed this and forgot that I had /bin/sh linked to /bin/bash on my system, I changed it now, and will be testing it on some other systems as well 🙏

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[mohamed-essam]

@mgarces Tested latest script on Ubuntu 22.04 (with and without /bin/sh linked to /bin/bash), and Fedora Desktop 40 and both work now perfectly ✔️