Remove pipenv check command from Dockerfile

It's outdated command. Depdendancy checking will be make on CI
as a separate step

Author: dmitryashutov

Dockerfile

@@ -8,7 +8,6 @@ WORKDIR /app
 COPY Pipfile Pipfile.lock ./
 RUN pipenv install --dev --skip-lock --python $PYTHON_VERSION 
 
-RUN pipenv check
 COPY . .
 
 EXPOSE 8081