[DOC] Added warning about quoting in .env file for Docker commands

[samadpls]

• Closes Warn about quotes interpretation in README instructions for using API docker image directly #224

Changes proposed in this pull request:

• Added warning about quoting in .env file for Docker commands

Checklist

• PR has an interpretable title with a prefix ([ENH], [FIX], [REF], [TST], [CI], [MNT], [INF], [MODEL], [DOC]) (see https://neurobagel.org/contributing/pull_requests for more info)
• PR has a label for the release changelog or skip-release (to be applied by maintainers only)
• PR links to GitHub issue with mention Closes #XXXX
• Tests pass
• Checks pass

For new features:

• Tests have been added

For bug fixes:

• There is at least one test that would fail under the original bug conditions.

[alyssadai]

Thanks a lot for addressing this @samadpls, and for the nice formatting of the warnings! 😄

A minor phrasing suggestion below for clarity (I think it's always helpful to link to existing issues where possible). Otherwise, this should be good to merge! 🧑‍🍳

[coveralls]

Pull Request Test Coverage Report for Build 8193763974

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 99.785%

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Totals
Change from base Build 8089977516:	0.0%
Covered Lines:	929
Relevant Lines:	931

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💛 - Coveralls

[surchs]

🚀 PR was released in v0.2.0 🚀