ARG IMAGENAME=nginx:alpine-slim

FROM ${IMAGENAME}

COPY ./default.conf.template /etc/nginx/conf.d/default.conf.template

EXPOSE 80

ENV localhost=default

CMD /bin/sh -c "envsubst '\$localhost' < /etc/nginx/conf.d/default.conf.template > /etc/nginx/conf.d/default.conf && nginx -g 'daemon off;'"