Fix separate database env vars

[aneurinprice]

Add an export so that this actually works. - Tested and working.

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Warnings

• This PR will change existing database contents.
• This PR introduces a breaking change to existing installations.

Summary

This change will actually fix my previous commit that allowed for specifying the database in a more granular way. The code in main right now silently fails onto the sqlite database.

Description of changes

added an export onto the variable for database url

[codeclimate]

Code Climate has analyzed commit 7ece6cd and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 87.1% (0.0% change).

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