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https://docs.docker.com/engine/userguide/eng-image/dockerfile_best-practices/
I ran into this because I was getting errors locally, like:
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/d/dpkg/libdpkg-perl_1.18.4ubuntu1.1_all.deb 404 Not Found [IP: 91.189.88.149 80]
It turns out you get these if you don't update, and the official best practices are to `run apt-get update && apt-get install`. In fact, running _any_ apt-get install command without the apt-get update && before it can result in unfortunate caching artifacts -- see "cache busting". (P.S. thanks to Peng on Freenode for helping me, I'm bad at Ubuntu.)
So:
sed -re \
's/RUN apt-get ((-y )?(install|build-dep))/RUN apt-get update \&\& apt-get \1/' -i \
projects/**/Dockerfile
I also manually fixed the cases that already ran apt-get update in their Dockerfile:
dlplibs/Dockerfile
grpc/Dockerfile
libreoffice/Dockerfile
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devtty1er
Devin Jeanpierre
Nikias Bassen
Oliver Chang