feat: implement shared Docker cache for runners and metals containers #1146
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Add shared Docker volume cache to reduce disk usage across containers - Create single shared Docker volume 'scastie-cache' for all services - Configure sbt-runner, scala-cli-runner, and metals-runner to use shared cache - Set COURSIER_CACHE environment variable to redirect dependency downloads - Implement helper methods for consistent cache volume mounting - Add volume creation with fallback (|| true) to prevent deployment failures
rochala
reviewed
Oct 23, 2025
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Summary
This PR implements shared Docker cache volumes to optimize disk usage across Scastie's container infrastructure by consolidating dependency caches for sbt-runner, scala-cli-runner, and metals containers.
Key changes include
scastie-cacheDocker volume for all servicesCOURSIER_CACHEenvironment variable to redirect dependency downloads