Мне лень
RUN apk add nginx && \
mkdir /run/nginx && \
apk add nodejs && \
apk add npm && \
cd /var/www/localhost/htdocs && \
npm install && \
npm run build && \
apk del nodejs && \
apk del npm && \
mv /var/www/localhost/htdocs/build /var/www/localhost && \
cd /var/www/localhost/htdocs && \
rm -rf * && \
mv /var/www/localhost/build /var/www/localhost/htdocs;
CMD ["/bin/sh", "-c", "exec nginx -g 'daemon off;';"]