Description

when using compliance reports, we init some options before configuring the scanners (e.g. init trivy-db).
To avoid panic, we need to set up scanners when parsing flags.

Related issues

• Close bug: Image scanning panics when using certain combination of options #6613

Checklist

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• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
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