chore: remove docker directory

[JeffreyDallas]

Description

This pull request changes the following:

• remove docker directory
• update workflow to remove any docker usage or dependencies
• update test to point to new solo-containers repo

Related Issues

Part of #987

[github-actions]

Unit Test Results

 26 files  ±0   26 suites  ±0   47s ⏱️ -1s
109 tests ±0  105 ✅ ±0  4 💤 ±0  0 ❌ ±0 
110 runs  ±0  106 ✅ ±0  4 💤 ±0  0 ❌ ±0 

Results for commit a9002f4. ± Comparison against base commit d19f6cf.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.17%. Comparing base (d19f6cf) to head (a9002f4).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #991   +/-   ##
=========================================
  Coverage     67.17%   67.17%           
  Complexity      339      339           
=========================================
  Files            64       64           
  Lines          1319     1319           
  Branches        157      157           
=========================================
  Hits            886      886           
  Misses          370      370           
  Partials         63       63           

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud