Docker use ENTRYPOINT dbt

[dmateusp]

resolves #2470

Description

Change the entrypoint to be able to pass arguments and use DBT as it is used outside the container

Checklist

• I have signed the CLA
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• I have updated the CHANGELOG.md and added information about my change to the "dbt next" section.

[beckjake]

Hey @dmateusp, thanks for this PR!
I love this change, but can we just change the script and leave these existing Dockerfiles alone?

I think it's important that they match what's on the docker repository as a historical record (even if it's a historical record of me writing bad code 😆).

Please also add a changelog entry for yourself with a link to this contribution!
I'll plan on back-porting this to dev/octavius-catto so it can make it in to 0.17.0, unless you want to rebase and change the target repository yourself.

[dmateusp]

Sure no problems! I was wondering if I should change the Dockerfiles, the reason I did is because as far as I can tell they're not usable if the CMD or ENTRYPOINT is overwritten right now. I will remove those changes

Sure I will update the ChangeLog

I can rebase it! any reason dev/marian-anderson is the default instead of dev/octavius-catto ? I actually don't know what those names refer to. Are they named releases?

[jtcohen6]

any reason dev/marian-anderson is the default instead of dev/octavius-catto ? I actually don't know what those names refer to. Are they named releases?

We're in the habit of naming minor versions after famous Philadelphians :)