On Tue, 26 Apr 2022 at 16:51, Matt Sicker <boa...@gmail.com> wrote:
>
> One thing to consider for optimizing the Docker build here is the
> buildkit feature:
> https://docs.docker.com/engine/reference/commandline/buildx/ and
> https://docs.docker.com/engine/reference/commandline/builder/

Thanks, but I cannot work out how one might use that.

> There is also buildpacks.io which is related, though I'm not sure if
> it's a feature built into Docker or with other tools only.
>
> On Tue, Apr 26, 2022 at 10:11 AM sebb <seb...@gmail.com> wrote:
> >
> > The Docker build currently targets Ubuntu 20.04, which I think is
> > known as Focal Fossa.
> >
> > However there is a reference in the build to bionic, which is a
> > previous release:
> >
> > echo "deb http://opensource.wandisco.com/ubuntu bionic svn110"
> >
> > Does that still make sense?
> >
> > Also I find that there seem to be frequent rebuilds, which can take
> > quite a long time to complete.
> > There must be some some items in the long RUN command that are being 
> > updated.
> > Any idea how to find out which they are?
> >
> > AIUI the reason for grouping lots of updates together is to reduce the
> > number of intermediate caches that are generated, but the disadvantage
> > is that a single update forces the entire command to be rebuilt.
> > Ideally frequently changing software should be installed separately
> > after the stable stuff. But how to find this out?
> >
> > Does it make sense to start on the next version of Ubuntu?
> >
> > Sebb

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