This repository is intended to be a minimum reproduction of an issue where the "contenthash" is not consistent from build to build. See webpack/webpack#17757

Reproduction Steps:

1. Build the project 30 times, setting aside each output: docker run --rm --entrypoint="" -v "$(pwd)":/usr/src/app -it $(docker build -q .) /usr/src/app/repro.sh (30 times is probably unnecessary - in my experience ~5 is sufficient)

2. Check which builds differ: echo "$(for i in {1..30}; do diff -qr build_$i build_$((i+1)); done)" | cut -f2- -d: | sort | uniq

Example Results

I have checked in a directory named example_offending_output_files that contains example offending results merged from two different builds. I have found that an effective way of viewing the diff between two offending files is to execute the following: git diff --no-index --word-diff=color --word-diff-regex=. example_offending_output_files/4021.0ad7a981f0f8370e.js example_offending_output_files/4021.2351c58a807ec15b.js

Machine Used for Reproduction

• Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz
• 32 GB
• Ubuntu 20.04.6 LTS running docker "node:18" image