nginx.run

#!/bin/sh

set -u
mkdir -p /var/run/

NGINX_PID_FILE="/run/nginx.pid"
NGINX_CONFIG="/etc/nginx/nginx.conf"
NGINX_SITES="/etc/nginx/sites-enabled"
NGINX_CMD="nginx -c $NGINX_CONFIG"
NGINX_CHECK_CONFIG_CMD="$NGINX_CMD -t"

log() {
  if [[ "$@" ]]; then echo "[`date +'%Y-%m-%d %T'`] $@";
  else echo; fi
}

log "waiting 1 seconds"
sleep 1

$NGINX_CHECK_CONFIG_CMD
$NGINX_CMD

log "Nginx started with $NGINX_CONFIG config, pid $(cat $NGINX_PID_FILE)." 


# Check if config has changed
# Note: also monitor /etc/hosts where the new back-end hosts might be provided.
while inotifywait -q -e create,delete,modify,attrib $NGINX_CONFIG $NGINX_SITES; do
  log "Restarting NGINX due to config changes..."
  $NGINX_CHECK_CONFIG_CMD
  $NGINX_CMD -s reload
  log "NGINX restarted, pid $(cat $NGINX_PID_FILE)." 
done