env var for config file added

[siddhikhapare]

Overview

Use the CONFIG environment variable to load the config file, but it currently doesn't allow custom file paths. Kubevuln always defaults to searching for the config file in the /etc/config path, regardless of the CONFIG env value.

How to Test

Build kubevuln using make Load config file using the CONFIG environment variable export CONFIG=path/to/clusterData.json

Set the PORT environment variable to 8081 export PORT=8080

Related issues/PRs:

Resolved #129

Checklist before requesting a review

• [x] My code follows the style guidelines of this project
• [x] I have commented on my code, particularly in hard-to-understand areas
• [x] I have performed a self-review of my code
• [x] If it is a core feature, I have added thorough tests.
• [x] New and existing unit tests pass locally with my changes

[dwertent]

/improve