Lost in the documentation

Helpful Resources Documentation
1

In the basic configuration doc, https://circleci.com/docs/1.0/configuration/
there is the line

CircleCI supports a large number of databases and other services.

Where is that list? What other services? How do I know not to install something like https://glide.sh if it may already be installed?

2

I’m a support engineer here. The list of databases and other services are listed in our documentation:

https://circleci.com/docs/

The most up-to-date Linux image is 14.04 (Trusty). Here is the list of pre-installed services and databases on it:

https://circleci.com/docs/1.0/build-image-trusty/