If you haven't already, install these new dependancies:
npm install copy-webpack-plugin --save-dev
npm install --save-dev clean-webpack-plugin
The first one moves the images and resumes folder into the docs (formally build) file.
Then after your edits run, npm run build
to refresh the files in the docs folder with your changes.
After Your PR is approved, merging to the master "redeploys" the site