FROM alpine AS build
ARG KEY

WORKDIR /instana

RUN apk add --update --no-cache curl

RUN if [ -n "$KEY" ]; then nginx_version='1.5.0' \
    curl --output index.html --user "_:$KEY" https://artifact-public.instana.io/artifactory/shared/com/instana/nginx_tracing/ \
    nginx_version=$(cat index.html |egrep "a href"| tail -1 | awk '{print $2;}'|sed 's/href="//'|sed 's/\/".*//') \
    rm index.html \
    curl \
     --output instana.zip \
     --user "_:$KEY" \
     https://artifact-public.instana.io/artifactory/shared/com/instana/nginx_tracing/$nginx_version/linux-amd64-nginx-1.20.1.zip && \
     unzip instana.zip && \
     mv glibc-libinstana_sensor.so libinstana_sensor.so && \
     mv glibc-nginx-1.20.1-ngx_http_ot_module.so ngx_http_opentracing_module.so; \
    else echo "KEY not provided. Not adding tracing"; \
        touch dummy.so; \
    fi

FROM nginx:1.20.1

EXPOSE 8080

ENV CATALOGUE_HOST=catalogue \
    USER_HOST=user \
    CART_HOST=cart \
    SHIPPING_HOST=shipping \
    PAYMENT_HOST=payment \
    RATINGS_HOST=ratings \
    INSTANA_SERVICE_NAME=nginx-web

# Instana tracing
COPY --from=build /instana/*.so /tmp/

COPY entrypoint.sh /root/
ENTRYPOINT ["/root/entrypoint.sh"]

COPY default.conf.template /etc/nginx/conf.d/default.conf.template
COPY static /usr/share/nginx/html