RUN --mount needs a magic comment to opt into experimental syntax: # syntax=docker/dockerfile:experimental
https://github.com/moby/buildkit/blob/master/frontend/dockerfile/docs/experimental.md but AFAIK, was designed for this purpose, among others. Thanks, On Tue, May 7, 2019, 11:33 AM Daniel Holth <dho...@gmail.com> wrote: > Also you must set an environment variable for docker build to be able to > use --mount > > On Tue, May 7, 2019, 12:28 Daniel Holth <dho...@gmail.com> wrote: > >> That one is multistage, great feature, but I think cache mounts would >> work fine with any number of stages. The mount option is a pretty new >> feature. >> >> On Tue, May 7, 2019, 12:24 Wes Turner <wes.tur...@gmail.com> wrote: >> >>> >>> >>> On Tuesday, May 7, 2019, Daniel Holth <dho...@gmail.com> wrote: >>> >>>> Have you tried using buildkit and the RUN --mount option? I've done >>>> extra stuff here (downloading rpms in a second image first) but I think you >>>> could just use the cache option. >>>> >>>> It would also be easy to use a second image and COPY in old docker. >>>> >>>> https://github.com/dholth/vagrant-docker/blob/master/Dockerfile#L86 >>>> >>> >>> Thanks. Is this a multi-stage Dockerfile (with multiple FROM >>> instructions)? >>> >>> Is there a guide for a PyPA recommended way to create network-efficient >>> reproducible (manylinux2010) wheels? >>> >>> >>>> >>>> On Tue, May 7, 2019, 11:59 Alex Becker <alcubec...@gmail.com> wrote: >>>> >>>>> You can use a local PyPI mirror, e.g. devpi, and point your docker >>>>> builds at that, basically tricking docker by going through the (local) >>>>> network stack instead of the filesystem. >>>>> >>>>> On Tue, May 7, 2019 at 8:12 AM Wes Turner <wes.tur...@gmail.com> >>>>> wrote: >>>>> >>>>>> What is the best way to build docker images without constantly >>>>>> re-downloading packages from PyPI (to use ~O(1) bandwidth instead of O(n) >>>>>> for every build) >>>>>> >>>>>> (AFAIK, nobody has any issue with the amount of bandwidth PyPI uses) >>>>>> >>>>>> Thus far, Docker doesn't want to support a build-time -v option (that >>>>>> could be used to bind-mount .pip/cache in at build time): >>>>>> >>>>>> "build time only -v option" >>>>>> https://github.com/moby/moby/issues/14080 >>>>>> >>>>>> Buildah *does* support a build-time -v option (and can also do >>>>>> rootless builds without a docker socket) >>>>>> -- >>>>>> Distutils-SIG mailing list -- distutils-sig@python.org >>>>>> To unsubscribe send an email to distutils-sig-le...@python.org >>>>>> https://mail.python.org/mailman3/lists/distutils-sig.python.org/ >>>>>> Message archived at >>>>>> https://mail.python.org/archives/list/distutils-sig@python.org/message/IL6MGTSAA4X5UZDERCAAAFGGX5DGRPF3/ >>>>>> >>>>> -- >>>>> Distutils-SIG mailing list -- distutils-sig@python.org >>>>> To unsubscribe send an email to distutils-sig-le...@python.org >>>>> https://mail.python.org/mailman3/lists/distutils-sig.python.org/ >>>>> Message archived at >>>>> https://mail.python.org/archives/list/distutils-sig@python.org/message/2MNMGYBNFOOVGXA2JQ2PLDTZITZXANJU/ >>>>> >>>> -- > Distutils-SIG mailing list -- distutils-sig@python.org > To unsubscribe send an email to distutils-sig-le...@python.org > https://mail.python.org/mailman3/lists/distutils-sig.python.org/ > Message archived at > https://mail.python.org/archives/list/distutils-sig@python.org/message/JXVF2IQKGCAGLH2A6KYOIQARJGXVKTI5/ >
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