automate docker release

[emmyoop]

resolves dbt-labs/dbt-release#109

Problem

We miss releasing docker images often

Solution

Delete Docker release workflow and move it to dbt-release since it's not just used by the core team dbt-labs/dbt-release#108

Add docker generation to end of release

Checklist

• I have read the contributing guide and understand what's expected of me
• 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
• This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc) or this PR has already received feedback and approval from Product or DX
• This PR includes type annotations for new and modified functions

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.07%. Comparing base (02d7727) to head (619414c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9833      +/-   ##
==========================================
- Coverage   88.12%   88.07%   -0.05%     
==========================================
  Files         178      178              
  Lines       22458    22458              
==========================================
- Hits        19790    19779      -11     
- Misses       2668     2679      +11     

Flag	Coverage Δ
integration	85.43% <ø> (-0.15%)	⬇️
unit	61.78% <ø> (ø)

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[emmyoop]

This file was moved to dbt-release in dbt-labs/dbt-release#108 since it's shared by all adapters + core

[mikealfare]

Conditional approval, assuming the defaults that looks like testing parameters are removed prior to merging.