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casperisfine/je-Dockerfile

Created February 4, 2024 08:55
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je-Dockerfile
# syntax = docker/dockerfile:1
FROM ruby:3.3-slim
RUN apt-get update && apt-get install -y libjemalloc2
RUN echo "#!/bin/sh\nexport LD_PRELOAD=$(echo /usr/lib/*/libjemalloc.so.2)\nexec \"\$@\"" >> /exec \
&& chmod +x /exec
ENTRYPOINT ["/exec"]
CMD ["ruby", "-e", "p ENV['LD_PRELOAD']"]
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