Add Dockerized build environment & scripts#31

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ryanprior wants to merge 3 commits intoelementary:mainfrom

ryanprior:docker-build

Commits on Oct 9, 2021

Adds Dockerized build environment & scripts

ryanprior
authored and
Ryan Prior
committed
Updates README with Docker build instructions

ryanprior
authored and
Ryan Prior
committed
Updates Dockerfile to use upstream `jekyll/jekyll` Docker image
Ryan Prior
committed