Feat/v2 workspaces

[lfbrehm]

This PR fixes a workspace related SQL query, adds some testing and fixes the Dockerfile.

[codecov]

Codecov Report

Attention: 76 lines in your changes are missing coverage. Please review.

Comparison is base (029d2e0) 46.74% compared to head (1ba32d0) 52.49%.
Report is 26 commits behind head on feat/version2.0rework.

Additional details and impacted files

@@                    Coverage Diff                    @@
##           feat/version2.0rework     #125      +/-   ##
=========================================================
+ Coverage                  46.74%   52.49%   +5.74%     
=========================================================
  Files                         69       70       +1     
  Lines                      10028    10286     +258     
=========================================================
+ Hits                        4688     5400     +712     
+ Misses                      5340     4886     -454     

Files	Coverage Δ
src/database/dsls/mod.rs	100.00% <ø> (ø)
src/database/enums.rs	78.12% <100.00%> (+2.03%)	⬆️
src/grpc/authorization.rs	97.24% <100.00%> (+0.02%)	⬆️
src/grpc/hooks.rs	0.00% <ø> (ø)
src/grpc/search.rs	11.72% <100.00%> (+11.72%)	⬆️
src/grpc/workspaces.rs	0.00% <ø> (ø)
src/middlelayer/create_db_handler.rs	73.45% <100.00%> (+0.23%)	⬆️
src/middlelayer/token_db_handler.rs	29.11% <100.00%> (+29.11%)	⬆️
src/middlelayer/workspace_db_handler.rs	92.26% <100.00%> (+92.26%)	⬆️
src/main.rs	0.66% <0.00%> (-0.01%)	⬇️
... and 7 more

... and 14 files with indirect coverage changes

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[das-Abroxas]

LGTM 🙂