Don't produce compressed assets at build time and instead do it as part of the nginx build

The core vite build shouldn't be responsible for implementing optimisations that are specific to a particular distribution mechanism. e.g. static compressed files for nginx.

This way the core build is "clean".

Instead, the packager/distributor of the build should be responsible for it. e.g. the nginx docker distribution should do any optimisations that it chooses.

Dockerfile

@@ -1,4 +1,13 @@
+FROM alpine AS builder
+
+COPY ./dist /dist
+
+# Compress assets to work with nginx-gzip-static-module
+WORKDIR /dist/assets
+RUN gzip -k ../index.html *.js *.map *.css *.wasm *-app-*.json 
+
 FROM nginxinc/nginx-unprivileged:alpine
 
-COPY ./dist /app
+COPY --from=builder ./dist /app
+
 COPY config/nginx.conf /etc/nginx/conf.d/default.conf