Add Copilot instructions for repository onboarding

[Copilot]

Configures repository-wide custom instructions to help Copilot coding agent understand RODA's architecture, build system, and development workflow without repeated exploration.

Changes

• Created .github/copilot-instructions.md with:
  • Tech stack: Java 21, Maven 3.8.6+, GWT 2.12.2, Spring Boot 3.4.10, Solr 9.10.0, PostgreSQL 17
  • Build commands and Maven profiles (-Pcore, -Pdebug-main)
  • GitHub Packages authentication requirement for dependency resolution
  • Docker Compose setup for test dependencies (Solr, PostgreSQL, ZooKeeper, LDAP)
  • Module structure: roda-common, roda-core, roda-ui
  • CI workflow details (TestNG groups, required environment variables)
  • Code style enforcement via Checkstyle and Eclipse formatter
  • Common build issues: GitHub auth failures, missing Docker services, GWT cache
  • Test execution times (full suite: 8-12 min, CI subset with -Dtestng.groups="travis")

Key guidance for agents

• Always configure ~/.m2/settings.xml before building (GitHub Packages dependency)
• Start Docker services before tests: docker compose -f deploys/standalone/docker-compose-dev.yaml up -d
• Multi-module builds require mvn install to update local repository when modifying roda-core
• First GWT compile takes 5-10 minutes; use codeserver for hot reload in development

Follows GitHub's best practices for repository custom instructions.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• gh.io
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>✨ Set up Copilot instructions</issue_title>
<issue_description>Configure instructions for this repository as documented in Best practices for Copilot coding agent in your repository.

</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes ✨ Set up Copilot instructions #3599

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[dosubot]

Related Documentation

Checked 5 published document(s) in 1 knowledge base(s). No updates required.

^{How did I do? Any feedback?}