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Forked fromhttps://gitlab.com/E3FxGaming/judge0/-/tree/kotlin-and-go?ref_type=heads

./build_image.sh -r us-central1-docker.pkg.dev -g neetcode-dd170/judge0

This project automates importing additional libraries, languages, etc. along with Judge0.

The core of this project is thebuild_image.sh script. This script generates the requiredDockerfile based on the structure of the project and arguments provided. All of the argumentshave a default value, so it can be run as is.It downloads a Judge0 release, prepares a Dockerfile and builds the Docker image.To see the options provided by the script run./build_image.sh -h.

The script goes through each subdirectory of the project and gathers all of theDockerfile.ext files in them. It concatenates all of the files along with theDockerfile.langs file into a single Dockerfile ready for building.TheDockerfile.langs file is responsible for injecting additional language dependencies into the Judge0 database, which are specified in JSON files in each of the subdirectories. How this works is described in theAdding langugaes section.

Additional dependencies are specified in aDockerfile.ext file. The file lists regular Docker commands which will be concatenated into a single Dockerfile. Must not contain aFROM directive.Example from thenasp subdirectory, where we require theEigen library depndency:

ENV EIGEN_VERSION 3.3.8RUN set -xe && \    curl -fSsL "https://gitlab.com/libeigen/eigen/-/archive/$EIGEN_VERSION/eigen-$EIGEN_VERSION.zip" -o /tmp/eigen.zip && \    unzip /tmp/eigen.zip -d /tmp && \    mv /tmp/eigen-$EIGEN_VERSION/Eigen /usr/include && \    rm -rf /tmp/*

A language can be added by adding a JSON file into a subdirectory of the project. The JSON files have to be a JSON listsof objects which adhere to Judge0's database schema. The IDs of the languages are automatically generated starting from the last ID that comes with Judge0. This is to prevent bugs with new Judge0 releases which could have addtiional languages. An example of this can be found in theoop/oop.json file:

[  {name: "Java (OpenJDK 17.0.2)",is_archived: false,source_file: "Main.java",compile_cmd: "/usr/lib/jvm/jdk-17.0.2/bin/javac %s Main.java",run_cmd: "/usr/lib/jvm/jdk-17.0.2/bin/java Main"  }]

If we need additional specific libraries added, which have to be passed to the compiler you shoulduse the JSON and theDockerfile.ext in tandem to both install the dependency and addthe compile command with a langugae specification to the Judge0 database.

The script downloads the Judge0 release, but only copies and modifies theirdocker-compose.yml file,thejudge0.conf file is a part of this repository and is tailored to Edgar's needs.If thejudge0.conf file changes with a new release of Judge0 it should be updated manually.

After the new Judge0 release you can run thebuild_image.sh script again with a differentargument for the Judge0 version. This should work for minor versions, but updatesto the project will probably be required on major releases and Judge0 project refactorings.

After the script builds your image. You need to push it to the GitLab Registry:

docker push registry.gitlab.com/edgar-group/judge0:X.Y.Z

Please note that in order fordocker push to work you need to login to GitLab's Registry since not everyone are allowed to write to your repository registry. To do that you need to:

docker login registry.gitlab.com