Dockerfile

FROM python:3.6

# Update Ubuntu instance
RUN apt-get update

# Make `/app` directory, copy all local files into that, and set it as working directory
RUN mkdir -p /app
COPY . /app
WORKDIR /app

# Install dependencies
RUN pip3 install -r requirements.txt

# Sets the environment variable ENV to `development`
ENV ENV=development

# echos $ENV
RUN echo $ENV

# exposes port 8080
EXPOSE 8080

# Launches Flask server
CMD ["python3", "app.py"]