switch to 2 stage build

Dockerfile

@@ -1,41 +1,13 @@
-FROM ubuntu:latest
-
-USER root
-
-# Install ruby and jekyll
-RUN apt update
-RUN apt-get -y install ruby-full build-essential zlib1g-dev nginx
-# RUN gem install jekyll bundler
-
-RUN gem sources --add https://repository.gbif.org/repository/rubygems.org/ && \
-    gem sources --remove https://rubygems.org/ && \
-    /usr/local/bin/bundle config set mirror.https://rubygems.org https://repository.gbif.org/repository/rubygems.org && \
-    su-exec jekyll /usr/local/bin/bundle config set mirror.https://rubygems.org https://repository.gbif.org/repository/rubygems.org
-
-# GBIF dockerfile
-ENV JEKYLL_UID=0 \
-    JEKYLL_GID=0 \
-    JEKYLL_ROOTLESS=1 \
-    TZ=UTC
-
-# GBIF dockerfile
-RUN apk --no-cache add curl && \
-    curl -Ss --output-dir /srv/jekyll/ --remote-name --fail https://raw.githubusercontent.com/gbif/hp-template/master/Gemfile && \
-    curl -Ss --output-dir /srv/jekyll/ --remote-name --fail https://raw.githubusercontent.com/gbif/hp-template/master/Gemfile.lock && \
-    /usr/local/bin/bundle config set frozen true && \
-    /usr/local/bin/bundle install
-
-# Disable problematic entrypoint scripts
-RUN rm -rf /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh \
-/docker-entrypoint.d/20-envsubst-on-templates.sh
-
-# Create the site directory and set permissions
-RUN mkdir -p /site && chown -R jekyll:jekyll /site
-
-# Switch to the jekyll user (avoid root issues)
-USER jekyll
-
-WORKDIR /site
-RUN jekyll build
-
-RUN echo "here"
+# Muitistage Dockerfile to first build the static site, then using nginx serve the static site
+FROM ruby:3.4.3 as builder
+WORKDIR /usr/src/app
+COPY Gemfile jekyll-theme-chirpy.gemspec ./
+RUN bundle install
+COPY . .
+RUN bundle exec jekyll build
+
+#Copy _sites from build to Nginx Container to serve site
+FROM nginx:latest
+COPY --from=builder /usr/src/app/_site /usr/share/nginx/html
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]