Monitor containers and restart not working ones

containers_monitor.sh

#!/bin/bash

# Reference https://gist.github.com/haukurk/a6e0751a8b8746265f8b2c55d9476230

declare -a containers

containers[0]=container_name_1
containers[1]=container_name_2
containers[2]=container_name_3
# more containers...

for i in "${containers[@]}"; do
  RUNNING=$(docker inspect --format="{{ .State.Running }}" $i 2>/dev/null)
  if [ $? -eq 1 ]; then
    echo "UNKNOWN - $CONTAINER does not exist."
    exit 3
  else
    Address=$(docker inspect -f {{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}} $i)

    echo "Check $i"
    if [ "$(curl -sL -w '%{http_code}' $Address -o /dev/null)" = "200" ]; then
      echo "Success"
    else
      docker restart $i
      echo "Fail"
    fi
  fi

  if [ "$RUNNING" == "false" ]; then
    docker restart $i
    echo "CRITICAL - $CONTAINER is not running."
    exit 2
  fi
done