Build a Dockerfile

  • Not the same as a docker-compose.yml

  • FROM the base image for the container

  • RUN run any command as though it’s using the terminal

    • If using something fancy, you may need to install it first

  • COPY copy a file from host to container

  • CMD run a command at runtime

  • Containers will rebuild from the top-most command that was changed
# syntax=docker/dockerfile:1
FROM ubuntu:20.04

# Copy external files
RUN mkdir -p /project/out/

COPY ./requirements.txt /project/
COPY ./hello.ipynb /project/

# Install system packages
RUN apt-get update && apt-get install -y \
  wget python3 python3-pip

# Install quarto CLI + clean up
RUN wget https://github.com/quarto-dev/quarto-cli/releases/download/v0.9.83/quarto-0.9.83-linux-amd64.deb
RUN dpkg -i ./quarto-0.9.83-linux-amd64.deb
RUN rm -f ./quarto-0.9.83-linux-amd64.deb

# Install Python requirements
RUN pip3 install -r /project/requirements.txt

# Render notebook
CMD cd /project && \
  quarto render ./hello.ipynb && \
  # Move output to correct directory
  # Needed because quarto requires relative paths in --output-dir: 
  # https://github.com/quarto-dev/quarto-cli/issues/362
  rm -rf /project-out/hello_files/ && \
  mkdir -p /project-out/hello_files && \
  mv ./hello_files/* /project-out/hello_files/ && \
  mv ./hello.html /project-out/
docker build -t <image name>