Fix server local build (#75)

* Fix server local build

* Build docs locally and for prod

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

infra/prod/docs/Dockerfile

@@ -0,0 +1,13 @@
+FROM node:18.16.0-alpine as docs
+
+WORKDIR /app/docs
+
+COPY ../../docs/package.json .
+COPY ../../docs/package-lock.json .
+RUN npm install
+
+COPY ../../docs .
+
+RUN npm install -g serve
+
+CMD ["serve", "-s", "build"]