fix: support for clustering when run within k8s (#1486)

---------

Co-authored-by: Eduardo Gurgel Pinho <[email protected]>

Author: darora

mix.exs

@@ -4,7 +4,7 @@ defmodule Realtime.MixProject do
   def project do
     [
       app: :realtime,
-      version: "2.41.22",
+      version: "2.41.23",
       elixir: "~> 1.17.3",
       elixirc_paths: elixirc_paths(Mix.env()),
       start_permanent: Mix.env() == :prod,

rel/env.sh.eex

@@ -7,9 +7,12 @@
 # for Fly.io
 ip=$(grep fly-local-6pn /etc/hosts | cut -f 1)
 
-# for AWS ECS Fargate
 if [ "$AWS_EXECUTION_ENV" = "AWS_ECS_FARGATE" ]; then
+  # for AWS ECS Fargate
   ip=$(hostname -I | awk '{print $3}')
+elif [ -n "${POD_IP}" ]; then
+  # for kubernetes
+  ip=${POD_IP}
 fi
 
 # default to localhost