Set default NGINX error log files to /dev/stderr

This avoids creating a single blank file even if logging is disabled

Author: Al-Azif

Dockerfile

@@ -88,4 +88,4 @@ ENTRYPOINT ["/sbin/tini", "--", "/entrypoint.sh", "/usr/sbin/nginx"]
 HEALTHCHECK CMD [ "/healthcheck.sh" ]
 
 # Set default command for container
-CMD ["-g", "daemon off;"]
+CMD ["-e", "/dev/stderr", "-g", "daemon off;"]