add: docker folder for image build

docker/Dockerfile

@@ -0,0 +1,24 @@
+FROM nginx:alpine
+
+ARG HUGO_VERSION
+ENV HUGO_VERSION=${HUGO_VERSION}
+ENV HUGO_DEST=/usr/share/nginx/html
+
+# Install git and curl
+RUN apk add --no-cache git curl
+
+# Download Hugo
+RUN curl -sSL https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_extended_${HUGO_VERSION}_Linux-64bit.tar.gz \
+    | tar -xz -C /usr/local/bin hugo
+
+# Add entrypoint script
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+# Copy custom nginx config
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+# Nginx serves on port 80
+EXPOSE 80
+
+# Set default entrypoint
+ENTRYPOINT ["/entrypoint.sh"]