Fix dockerfile

Author: davidjurado

boston_housing/project/Dockerfile

@@ -4,10 +4,12 @@ FROM python:3.6-slim-buster
 
 WORKDIR /workspace/boston_housing
 
+COPY requirements.txt requirements.txt
+
+RUN pip install --no-cache --disable-pip-version-check --default-timeout=1000 -U -r requirements.txt
+
 COPY . .
 
 RUN chmod +x ./run_and_time.sh
 
-RUN pip install --no-cache --disable-pip-version-check --default-timeout=1000 -U -r requirements.txt
-
 ENTRYPOINT ["python", "/workspace/boston_housing/mlcube.py"]