Add dockerfile

Dockerfile

+FROM alpine:latest as build
+
+ENV HUGO_VERSION 0.56.0
+ENV HUGO_BINARY hugo_${HUGO_VERSION}_Linux-64bit.tar.gz
+
+# Install Hugo
+RUN set -x && \
+  apk add --update wget ca-certificates git && \
+  wget https://github.com/spf13/hugo/releases/download/v${HUGO_VERSION}/${HUGO_BINARY} && \
+  tar xzf ${HUGO_BINARY} && \
+  rm -r ${HUGO_BINARY} && \
+  mv hugo /usr/bin
+
+COPY ./ /site
+
+WORKDIR /site
+
+RUN /usr/bin/hugo --gc --minify --enableGitInfo
+
+FROM nginx:alpine
+
+COPY --from=build /site/public /usr/share/nginx/html
+