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Optimise bundle build and server side add compression #53
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This PR optimises the final build for the released docker images. It's triggered by
npm run build.Changes:
Enabling uglifyjs and disabling react devmode brings the final JS bundle size down from 3.7MB to 1.46MB.
Enabling server size compression in express brings it down to 723KB when downloaded by the browser.
Also changed a line in the Dockerfile to bring down the image size from 514MB to 352MB