Update infra.rst

DeepChem's website infrastructure is all managed on AWS through different AWS

services. All DeepChem developers have access to these services through the

deepchem-developers IAM role. (An IAM role controls access permissions.) At

present, @rbharath is the only developer with access to the IAM role, but

present, @rbharath is the only developer with admin access to the IAM role, but

longer term we should migrate this so other folks have access to the roles.

S3

Amazon's S3 allows for storage of data on "buckets" (Think of buckets like folders.)

There are two core deepchem S3 buckets:

  - deepchemdata: This bucket hosts the deepchem.io website, MoleculeNet datasets, pre-featurized datasets, 

    and pretrained models. This bucket is set up to host a static website (at `static`_).

  - deepchemdata: This bucket hosts the MoleculeNet datasets, pre-featurized datasets, 

    and pretrained models. This bucket was set up to host a static website (at `static`_),

    which is no longer in use and will be removed.

  - deepchemforum: This bucket hosts backups for the forums. The bucket is private for security reasons.

    The forums themselves are hosted on a digital ocean instance that only @rbharath currently has access to.

The AWS certificate manager issues the SSL/TLS certificate for the

\*.deepchem.io and deepchem.io domains.

Cloudfront

GitHub Pages

^^^^^^^^^^

We make use of a cloudfront distribution to serve our static website. The

cloudfront distribution connects to the certificate in Certificate Manager and

uses the deepchemdata bucket as the origin domain. We set CNAME for

www.deepchem.io and deepchem.io

We make use of GitHub Pages to serve our static website. GitHub Pages

connects to the certificate in Certificate Manager. We set CNAME for

www.deepchem.io, and an A-record for deepchem.io.

The GitHub Pages repository is [deepchem/deepchem.github.io](https://github.com/deepchem/deepchem.github.io).

GoDaddy

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