Init

Dockerfile

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+FROM debian
+
+# Prepare image and install dependencies
+ENV LANG=C.UTF-8
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get upgrade -y
+
+RUN apt-get install -y flex bison build-essential \
+    csh libxaw7-dev wget \
+    libc6-i386 default-jdk
+
+# Install student dist
+
+# Note that this is _not_ what is in the `/usr/class/cs143` subdirectory in the
+# VM! The `cs143` contains make files that generate the assignments in an
+# arbitrary folder from skeleton files. Essentially this step was already done
+# in the `student-dist.tar.gz`. The assignments just have to be completed and
+# submitted in the respective /class/assignments/PA* subdirectories.
+
+# Prepare the immutable distribution
+RUN mkdir -p /usr/class \
+  && wget https://courses.edx.org/asset-v1:StanfordOnline+SOE.YCSCS1+1T2020+type@asset+block@student-dist.tar.gz -P /tmp \
+  && tar xzf "/tmp/asset-v1:StanfordOnline+SOE.YCSCS1+1T2020+type@asset+block@student-dist.tar.gz" -C /usr/class
+ENV PATH=/usr/class/bin:$PATH
+
+# Download submission scripts
+RUN wget -O - https://courses.edx.org/asset-v1:StanfordOnline+SOE.YCSCS1+1T2020+type@asset+block@pa1-grading.pl \
+  | tee /usr/class/assignments/PA2J/grade.pl /usr/class/assignments/PA2/grade.pl > /dev/null
+
+RUN wget -O - https://courses.edx.org/asset-v1:StanfordOnline+SOE.YCSCS1+1T2020+type@asset+block@pa2-grading.pl \
+  | tee /usr/class/assignments/PA3J/grade.pl /usr/class/assignments/PA3/grade.pl > /dev/null
+
+RUN wget -O - https://courses.edx.org/asset-v1:StanfordOnline+SOE.YCSCS1+1T2020+type@asset+block@pa3-grading.pl \
+  | tee /usr/class/assignments/PA4J/grade.pl /usr/class/assignments/PA4/grade.pl > /dev/null
+
+RUN wget -O - https://courses.edx.org/asset-v1:StanfordOnline+SOE.YCSCS1+1T2020+type@asset+block@pa4-grading.pl \
+  | tee /usr/class/assignments/PA5J/grade.pl /usr/class/assignments/PA5/grade.pl > /dev/null
+
+# Setup working directory
+RUN mkdir -p /class
+WORKDIR /class
+
+# Run entrypoint to connect working directory to mounted host volume
+COPY entrypoint.sh /usr/bin/entrypoint.sh
+ENTRYPOINT ["entrypoint.sh"]
+CMD ["/bin/bash"]

README.md

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+# Lukewarm and the Cool
+One day [Cool](https://en.wikipedia.org/wiki/Cool_(programming_language))
+compiled another
+[`fact`](https://en.wikipedia.org/wiki/Cool_(programming_language)#Examples) and
+suddenly got very sad. It was about its buddy
+[Bodhi](https://www.bodhilinux.com/). Bodhi 1.4.0 (!!) was ancient and tired.
+Its mirrors broke a long time ago an it just wanted to retire.
+
+Cool on the other hand was still full of verve and vim. So it went looking for a
+new companion. Soon enough Lukewarm entered its life. Lukewarm was a slick,
+quick-witted, up-to-date container and they immediately got along well.
+
+They lived happily ever after. The End.
+
+![](luke.png)
+
+_Totally unrelated image of a cowboy from [pngwing.com](https://www.pngwing.com/en/free-png-ydaxh)_
+
+# Uhm?!
+In short: If you are working through the [edX
+Compilers](https://www.edx.org/course/compilers) course you probably want
+Lukewarm instead of the Bodhi VM. It provides all the tools you need for
+developing your Cool compiler in an up-to-date container image.
+
+# Features
+Lukewarm is tailored for working through the Cool assignments. It also has
+several improvements over the provided [Bhodi](https://www.bodhilinux.com/) VM:
+- All dependencies are pre-installed
+- All `Cool` tools, scripts and binaries
+- Grading scripts are pre-installed and can be executed directly (no workarounds
+  like in the VM)
+- Work locally with your favourite tools, then compile and submit from within
+  the container
+- Predictable and lightweight
+- Use it with CI/CD
+- It's based on an up-to-date debian image so you can `apt-get` what you need
+
+# Usage
+
+```shell
+docker run -it -v $PWD:/class arminfriedl/lukewarm
+```
+
+At first start this will set up all assignments in `$PWD`.

entrypoint.sh

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+#!/usr/bin/env bash
+
+set -euo pipefail
+
+# Copy immutable dist to work folder if it exists and is empty
+if [ -d "/class" ] && [ -z "$(ls -A /class)" ]; then
+    cp -R /usr/class/* /class/
+fi
+
+exec "$@"