yozuru/judge0-compilers repository overview

⁠Judge0 Compilers (Optimized Edition)

A high-performance, modernized Docker image containing compilers, interpreters, and the Isolate⁠ sandbox. Designed for competitive programming platforms and online judges.

⁠✨ Key Features

• Cutting-Edge Toolchain:
  • GCC 15.2 & Clang 21: Defaulting to C23 and C++23 standards.
  • Java 21 LTS & Java 25 LTS: Latest OpenJDK builds.
  • Python 3.14 & Node.js 24: Modern scripting environments.
  • Kotlin 1.9 & 2.3: Full Kotlin support.
• Optimized Performance:
  • Fast Builds: Uses multi-stage Docker builds to copy pre-compiled binaries, reducing build time from minutes to seconds.
  • Auto-Imported Headers: Common headers (std.h, stdc++.h) are automatically included, and common classes (Scanner, BigInteger) are pre-imported for convenience.
• Security First:
  • Includes Isolate sandbox pre-installed from official Debian repositories.
  • Configured with reasonable memory and process limits.

⁠🚀 Quick Start

⁠Build the Image

docker build -t yozuru/judge0-compilers:latest .

⁠Verify Installation

Run the included test suite to verify all compilers are compiling and executing code correctly:

bin/run-tests

Expect output:

--- C (Clang 21) ---
Hello, Yozuru
--- C++ (GCC 15.2) ---
Hello, Yozuru
...

⁠🛠️ Supported Languages

⁠⚙️ Configuration

The project includes a generate_json.py script to generate a db.json configuration file for use with Judge0 or compatible systems.

⁠📄 License

This project is licensed under the GNU General Public License v3.0.

Original work Copyright (C) 2017 Herman Zvonimir Došilović.

Modifications Copyright (C) 2026 Yozuru.

See LICENSE⁠ for details.