diff --git a/Dockerfile b/Dockerfile
index 6262d8c..2422550 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,10 +6,10 @@ RUN virtualenv venv -p python3
 ENV PATH="$VIRTUAL_ENV/bin:$PATH"
 
 WORKDIR /app
-ADD . /app
+COPY . /app
 
 #install dependencies:
 RUN pip install -r requirements.txt
 
 #RUN the application
-CMD ["python","app.py"] 
\ No newline at end of file
+CMD ["python","app.py"]