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The container image inherits kernel.core_pattern from the host. When the host pipes core dumps to a handler (e.g. Ubuntu's apport), that handler does not exist or work correctly inside the container, so core dumps are silently lost. Override any pipe-based core_pattern with a file-based pattern that writes directly to /var/lib/scylla/coredump/. The override is attempted both from the entrypoint (scyllasetup.coredumpSetup) and from scylla-server.sh when running as root; it succeeds only when the container has write access to /proc/sys/kernel/core_pattern and is silently skipped otherwise. Fixes: SCYLLADB-1366 Closes scylladb/scylladb#29337