Dockerize the docs

Author: zgiles

Diff for: Dockerfile

@@ -0,0 +1,10 @@
+FROM alpine:latest as builder
+WORKDIR /build
+ADD . /build/
+RUN wget https://github.com/gohugoio/hugo/releases/download/v0.62.2/hugo_0.62.2_Linux-64bit.tar.gz
+RUN tar -xzvf hugo_0.62.2_Linux-64bit.tar.gz
+RUN ./hugo
+
+FROM nginx:latest
+COPY --from=builder /build/public /usr/share/nginx/html
+ENV NGINX_PORT 80