User official images for docker build

Dockerfile

@@ -1,8 +1,21 @@
-FROM klakegg/hugo:0.104.3-ubuntu-onbuild AS build
+# Use alpine Linux, download desired version of HUGO and build html files
+FROM alpine:3.19.1 AS build
+RUN apk add --no-cache wget=1.21.4-r0
+ARG HUGO_VERSION="0.123.7"
+RUN wget --quiet "https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_${HUGO_VERSION}_Linux-64bit.tar.gz" && \
+    tar xzf hugo_${HUGO_VERSION}_Linux-64bit.tar.gz && \
+    rm -r hugo_${HUGO_VERSION}_Linux-64bit.tar.gz && \
+    mv hugo /usr/bin && \
+    chmod 755 /usr/bin/hugo
+WORKDIR /src
+COPY ./ /src
+RUN mkdir /target && \
+    hugo -d /target
 
+# Serve the generated html using nginx
 FROM nginxinc/nginx-unprivileged:alpine
-RUN sed -i '3 a\    absolute_redirect off;' /etc/nginx/conf.d/default.conf
-RUN sed -i 's/#error_page  404/error_page  404/' /etc/nginx/conf.d/default.conf
+RUN sed -i '3 a\    absolute_redirect off;' /etc/nginx/conf.d/default.conf && \
+    sed -i 's/#error_page  404/error_page  404/' /etc/nginx/conf.d/default.conf
 COPY --from=build /target /usr/share/nginx/html
 
 EXPOSE 8080