Merge pull request #25 from aparrill-specterops/docker-images

Added error verification

Removed redundant flush

Fixed repeated filename

Adjusted so env is restored if there is an error

Internal import clean up

Updated date

Adjusted texts for GitHub CI/CD

Code clean up

Adjusted file permission to be consistent with other files

Cleaned up user instruction

Adjusted regex based on review

Fixed encapsulation issue with `GetBool`

Code clean up

Filter empty strings when added/removing hosts