DockerFile

# Use an official Python runtime as a parent image
FROM python:3.6-slim

# Set the working directory to /app
WORKDIR /hover-dns-updater

# Copy the current directory contents into the container at /app
ADD hover-dns-updater.py hover-update.cfg requirements.txt /hover-dns-updater/

# Install any needed packages specified in requirements.txt
RUN pip install --trusted-host pypi.python.org -r requirements.txt && \
    pip install --upgrade flake8 && \
    flake8 --max-line-length 120 . && \
    pip uninstall -y flake8

# Define environment variable
ENV NAME hover-dns-updater

# Run app.py when the container launches
CMD ["python", "hover-dns-updater.py", "--service"]