Fixed typo in Dockerfile

Author: m-messer

app/Dockerfile

@@ -10,7 +10,7 @@ RUN pip3 install -r requirements.txt
 
 # Copy the evaluation and testing scripts
 COPY evaluation.py ./app/
-COPY test_evaluation ./app/
+COPY test_evaluation.py ./app/
 
 # Copy Documentation
 COPY docs/dev.md ./app/docs/dev.md