install Julia packages in /opt/julia

[minrk]

This gets close to #331, but we're not quite there. I believe the only files left in $HOME are .curlrc and .ipython/profile_default/startup/mplimporthook

@parente do you recall what the curlrc config solves and/or if it can be put in /etc/ somewhere?

[parente]

The .curlrc fixes a problem with using curl to access sites over HTTPS:

docker-stacks/base-notebook/Dockerfile

Line 57 in bb222f4

echo "cacert=/etc/ssl/certs/ca-certificates.crt" > /home/$NB_USER/.curlrc

. Without it, every certificate was rejected as untrusted long ago. Maybe newer images don't have this problem or maybe there's a better way to configure it. https://ec.haxx.se/cmdline-configfile.html seems to suggest curl only looks in the home directory on linux.

[jakirkham]

Is this just the system curl? We built curl at conda-forge as well, which uses certificates that we pulled from the certifi package. It generally works ok.

ref: http://github.com/conda-forge/curl-feedstock
ref: http://github.com/conda-forge/ca-certificates-feedstock

[parente]

It does indeed predate most of conda forge. It's worth trying to switch to a curl package installed in the root conda env so that it's available on the default path.

[minrk]

I just ran in a base-notebook container:

rm ~/.bashrc
apt update && apt install curl
curl https://github.com

and it works fine. Does that mean we don't need this file anymore?

[jakirkham]

Maybe it is worth digging through git blame to see who added the file and why. Just in case there is something we are missing. Then again I don't know much about it.

[parente]

I'm pretty sure I added the .curlrc. I'll go poke through the history.

[parente]

Nope, it was in be4ca70 for issue #153, cert error when Julia downloaded the QuantEcon package.

[parente]

Let's get this in. If curl breaks, we can always build again with a fix.

[jakirkham]

Should add we have julia in conda-forge now.