FROM nginx:alpine

EXPOSE 80

ENV PROXY_PASS_HOST=http://example.com

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

COPY script.sh /usr/share/nginx/script.sh

CMD envsubst '$PROXY_PASS_HOST' < etc/nginx/conf.d/default.template > /etc/nginx/conf.d/default.conf && \
    nginx -g 'daemon off;'