added nginx config and rewrote Dockerfile and gitlab ci

Dockerfile

@@ -1,6 +1,5 @@
-FROM alpine:latest
-RUN which curl || ( apk update && apk add curl )
-RUN curl -L https://github.com/gohugoio/hugo/releases/download/v0.90.0/hugo_0.90.0_Linux-64bit.tar.gz > hugo.tar.gz
-RUN tar -zxf hugo.tar.gz
-RUN mv hugo /usr/local/bin/hugo
-CMD hugo
+FROM nginx:alpine
+COPY .build /var/www
+COPY nginx.conf /etc/nginx/nginx.conf
+EXPOSE 80
+ENTRYPOINT ["nginx","-g","daemon off;"]