Information on how to update this website Updating images make sure images are less than 1MB in size make sure images have an aspect ratio of 4:3 (height:width) do not change image names this can be done online using the Github user interface Updating text edit the md files in the content directory this can be done directly online the Github user interface Local testing locally install dependencies, see slate theme run bundle exec jekyll server with docker: install docker build Docker image docker build -t test . in the folder with the website run the image docker run -d -p 4000:4000 --name beautiful-jekyll -v "$PWD":/srv/jekyll test