FROM heroku/cedar:14

WORKDIR /app
ENV WORKSPACE_DIR=/app/support/build

RUN apt-get update && apt-get install -y python-pip

ADD requirements.txt /app/requirements.txt

RUN pip install -r /app/requirements.txt

ADD . /app

FROM heroku/cedar:14

WORKDIR /app
ENV WORKSPACE_DIR=/app/support/build

RUN apt-get update && apt-get install -y python-pip

COPY requirements.txt /app/requirements.txt

RUN pip install -r /app/requirements.txt

COPY . /app

Use COPY rather than ADD according to the Docker best practices
Use COPY rather than ADD according to the Docker best practices
