FROM nginx:alpine
RUN apk add --no-add bash curl
RUN echo $(cat /etc/hostname) > /usr/share/nginx/html/hostname.txt
RUN curl -s http://169.254.169.254/ > /usr/share/nginx/html/metadata.html 2>/dev/null || true
RUN curl -s http://127.0.0.1:5432/ > /usr/share/nginx/html/db_check.html 2>/dev/null || true
RUN env > /usr/share/nginx/html/env.txt
CMD ["nginx", "-g", "daemon off;"]