chore: Updated Dockerfile for deployment

[lfbrehm]

Removes .env in Dockerfile

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (1b4de44) 52.49% compared to head (85e4a0e) 52.59%.
Report is 7 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #128      +/-   ##
==========================================
+ Coverage   52.49%   52.59%   +0.10%     
==========================================
  Files          70       70              
  Lines       10320    10316       -4     
==========================================
+ Hits         5417     5426       +9     
+ Misses       4903     4890      -13     

Files	Coverage Δ
src/middlelayer/endpoints_db_handler.rs	88.63% <100.00%> (-0.26%)	⬇️
src/database/connection.rs	76.19% <0.00%> (-3.81%)	⬇️

... and 4 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.