accommodate POSTGRES_DB different from username but POSTGRES_INITDB_ARGS is not

[jjb]

#20

[justinclift]

Thanks, that makes sense. Does it fix the problem you were hitting in #7 (comment)?

[justinclift]

I'll test this patch right now on my local workstation (takes about an hour), and if it passes ok then I'll merge this and push out updated Docker images with it. 😄

[jjb]

alas, did not work so far #20 (comment)

(sorry to spread this over 2 issues and a PR 😅 )

[justinclift]

No worries. 😄

[justinclift]

Testing this out again now, in addition to the patch that added support for PG 12.

From a rough eyeballing of this PR, it seems like it should work. Lets see how it goes in the actual build though... 😄

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Should probably add some new tests too, specifically to create non-default database names.

Meh, that can be a later thing for a future PR... 😄

[justinclift]

This is passing the tests, and looks useful, so has been merged. Thanks for getting this done @jjb. 😄

Updated Docker images are currently building, and will be on Docker Hub in the next hour or so.

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The 12-dev image has been updated to include this PR and manually pushed to Docker Hub already, so you don't need to wait an hour. 😄