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build: add reusable headless Docker build environment - #1475
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Add a Maven profile activated on linux/aarch64 that sets osgi.os=linux, osgi.ws=gtk, osgi.arch=aarch64. Without it, Tycho falls back to the pom's default win32 target environment on arm64 Linux and builds an unlaunchable test runtime (NoClassDefFoundError: org.eclipse.swt.SWTError, exit code 13), so SWT/UI tests cannot run in an arm64 container. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Add docker/Dockerfile (Maven + Temurin 21 base plus Xvfb and the GTK/X11 libraries Eclipse SWT and AWT require) and a README documenting how to run the full verify suite headlessly in a container. Runs --init so xvfb-run is not PID 1, and mounts a persistent .m2 volume to cache p2/Maven downloads between runs. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Supersedes #1501
Why the change
DSL DevKit can now be built and tested headlessly in a Linux container, on x86-64 or ARM64, without installing Eclipse, GTK or Xvfb on the host.
Special things to note
64bit_linux_aarch64Maven profile (osgi.os=linux,osgi.ws=gtk,osgi.arch=aarch64), which Tycho needs on Linux ARM64. It comes from build: add Tycho environment profile for linux/aarch64 #1501.test.timeout, so the documented ARM command raises it to 7,200 s.Change outline
Checked with the full CI-equivalent build in the container on x86-64 and under ARM64 emulation: 333 tests, 0 failures, 2 skipped, and Checkstyle, PMD, CPD and SpotBugs clean.
🤖 Generated with Claude Code