Docker container environment for building and running tests locally

[jnicholls]

OpenLimits will begin to utilize a set of open source tooling for running its code coverage tests that does not come standard with the Rust cargo toolchain. Additionally, OpenLimits will eventually introduce various language bindings on top of it that will involve lots of various toolsets that will begin to become cumbersome to maintain by hand.

What we want is a build environment within a Docker container that can be executed on any contributor's machine, as easily as cloning the repository and running a set of make targets. Every machine has easy access to make and Docker as the two environmental dependencies.