fix: add neon build for production (duniter)

Dockerfile

@@ -4,6 +4,7 @@ COPY . .
 RUN rm -rf /app/node_modules
 RUN npm install
 RUN npm run tsc
+RUN cd node_modules/duniter/neon/ && NODE_ENV=production ./build.sh
 
 FROM node:9 as build-front
 COPY --from=build-back /app /app