Update nginx deployment so it actually works

dockerfile

@@ -3,14 +3,15 @@ RUN pip install mkdocs
 WORKDIR /app
 COPY . /app
 ENV SITE_DIR=/app/site
-RUN mkdocs build --clean -d $SITE_DIR
+RUN mkdocs build -d $SITE_DIR
 
 
-FROM git.fjla.uk/fred.boniface/web-deploy:latest as compressor
+FROM git.fjla.uk/fred.boniface/web-deploy:0.0.2 as compressor
 COPY --from=builder /app/site/ /deploy/in/
 RUN node /app/process.js
 
-FROM nginx:alpine
-RUN rm -rf /usr/share/nginx/html/*
+FROM georgjung/nginx-brotli:mainline-alpine
+RUN rm -rf /usr/share/nginx/html/* && rm -f /etc/nginx/nginx.conf
+COPY ./nginx.conf /etc/nginx/nginx.conf
 COPY --from=compressor /deploy/out/ /usr/share/nginx/html/
-EXPOSE 80
+EXPOSE 80