FROM nginx:alpine
COPY index.html /usr/share/nginx/html/index.html
RUN apk add --no-cache curl && \
    ln -sf /dev/stdout /usr/share/nginx/html/health
EXPOSE 80
HEALTHCHECK --interval=10s --timeout=3s --retries=3 CMD curl -sf /health || exit 1
CMD ["nginx", "-g", "daemon off;"]