fix(dockerfile): wrong copy destination

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 96.37%. Comparing base (731b71e) to head (13a321f).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #54 +/- ## ======================================= Coverage 96.37% 96.37% ======================================= Files 1 1 Lines 414 414 Branches 53 53 ======================================= Hits 399 399 Misses 15 15 ```

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