FileNotFoundError: [Errno 2] No such file or directory: '/app/radare2/sys' while installing using docker

[harishsg99]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Install this using docker

Error

Traceback (most recent call last):
#9 524.0 File "/app/adhrit/installer.py", line 163, in
#9 524.0 main()
#9 524.0 File "/app/adhrit/installer.py", line 160, in main
#9 524.0 dep.ins()
#9 524.0 File "/app/adhrit/installer.py", line 49, in ins
#9 524.0 os.chdir(working_dir + '/radare2/sys')
#9 524.0 FileNotFoundError: [Errno 2] No such file or directory: '/app/radare2/sys'

Desktop (please complete the following information):

• OS: Docker

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.

[abhi-r3v0]

@rahul-sani maybe we should add a check to verify successful download of radare2

[harishsg99]

Well, I will try to contribute code to check for successful download of radare2