Reduce the size of the Nginx image

# syntax = docker/dockerfile:1.0-experimental

## Stage Nginx

ARG nginx_version=latest

FROM nginx:${nginx_version} as nginx

LABEL uk.org.kodo.maintainer = "Dom Sekotill <dom.sekotill@kodo.org.uk>"

FROM nginx:${nginx_version} as nginx-stage

ENV STAGE=/stage

COPY --from=docker.kodo.org.uk/kodo.org.uk/docker/docker-build-helpers:latest \

    /scripts /bin

RUN config-nsswitch nginx

RUN collect-binaries /usr/sbin/nginx

# Don't need nginx modules currently

# RUN collect-binaries /etc/nginx/modules/*

RUN mkdir -p $STAGE/var/log/nginx $STAGE/var/cache/nginx

RUN ln -s /dev/stderr $STAGE/var/log/nginx/error.log

## Nginx image

FROM scratch as nginx

COPY --from=nginx-stage /stage /

COPY data/nginx /etc/nginx

LABEL uk.org.kodo.maintainer "Dom Sekotill <dom.sekotill@kodo.org.uk>"

STOPSIGNAL SIGTERM

EXPOSE 80

CMD ["/usr/sbin/nginx", "-g", "daemon off;"]

ARG php_version=