fail on unexpected exception + handle mac os docker

[glicht]

Status

• In Progress
• Ready
• In Hold - (Reason for hold)

Related Issues

fixes: link to the issue
related: https://github.com/demisto/etc/issues/31000

Description

• Fail on unexpected exception. We were continuing instead of failing at add_tmp_lint_files
• Handle failure in docker on mac: error while using docker for mac client 2.5.0.0 docker/docker-py#2696

Screenshots

Paste here any images that will help the reviewer

Must have

• Tests
• Documentation

[lgtm-com]

This pull request introduces 1 alert when merging 7dc8fa7 into 08ad5cf - view on LGTM.com

new alerts:

• 1 for Unnecessary pass

[coveralls]

Pull Request Test Coverage Report for Build d66ebd04-e5a2-4514-9e47-0c180c315560

• 27 of 45 (60.0%) changed or added relevant lines in 3 files are covered.
• 2 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.02%) to 86.608%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
demisto_sdk/commands/lint/lint_manager.py	2	3	66.67%
demisto_sdk/commands/lint/helpers.py	0	4	0.0%
demisto_sdk/commands/lint/linter.py	25	38	65.79%

Files with Coverage Reduction	New Missed Lines	%
demisto_sdk/commands/lint/helpers.py	1	65.04%
demisto_sdk/commands/lint/linter.py	1	69.55%

Totals
Change from base Build 9aaa7fd6-a3b9-4e29-8ebd-0644cc20a4fd:	-0.02%
Covered Lines:	12165
Relevant Lines:	14046

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💛 - Coveralls

[glicht]

@GalRabin @orhovy I enabled mypy and vulture testing when no docker engine is available. Also added a fix that if no docker engine is available we get the py version from the yml. Additionally, if we are in CI build of content and docker for some reason is not available we will fail.