amazonlinux2 not supported?

[Alexc0007]

Description
according to this issue: #44
amazonlinux2 should be supported to scan by trivy.

however, when i tried to scan such image, i was unable and got the following error:
WARN unsupported os : amazon

What did you expect to happen?
i expect to have the ability to scan amazonlinux2 based images

What happened instead?
trivy didnt scan

Output of run with -debug:

2020-04-13T09:43:38.553Z	DEBUG	cache dir:  /root/.cache/trivy
2020-04-13T09:43:38.553Z	DEBUG	db path: /root/.cache/trivy/db/trivy.db
2020-04-13T09:43:38.560Z	INFO	Updating vulnerability database...
2020-04-13T09:43:38.560Z	DEBUG	git pull
2020-04-13T09:43:38.817Z	DEBUG	total updated files: 1
2020-04-13T09:43:38.821Z	DEBUG	Vulnerability type:  [os library]
2020-04-13T09:43:49.117Z	DEBUG	OS family: amazon, OS version: 2 (Karoo)
2020-04-13T09:43:49.118Z	WARN	unsupported os : amazon

Output of trivy -v:

trivy version 0.1.6

Additional details (base image name, container registry info...):
image based on amazonlinux2
registry: ECR

[mrueg]

Your version of trivy is probably too old, you should try with a newer binary.

[Alexc0007]

Hi, you are correct...
i used the documentation to install it...

then after checking further i noticed that the documentation is waaaay to old...
i suggest updating all the installation steps to make the relevant to the reality...
(also information on the yam repo is incorrect)
would be nice if things would work the way documentation says they will....

[Alexc0007]

ill close this issue then.
but the docs should really be updated, it creates lots of confusion...