Resource via name resolutions instead of IP

[shanelord01]

I have containers on my Unraid server that are all set to Bridge network. I've had problems with IP address changes when the containers update and restart and the IP changes are not reflecting via Newt to my Pangolin server, with bad gateway errors as the result.

Is creating a "pangolin" network and attaching each container I want to it (as per below) an OK way to deal with this to allow name resolution instead of IP for resources? I have this script running at every boot of my unraid server which all seems to be working fine but not sure if there is a better way.

#!/usr/bin/env bash
set -euo pipefail

NET="pangolin"

# container_name => alias (DNS inside 'pangolin')
declare -A MAP=(
  [immich]="immich"
  [immich-public-proxy]="immich-public-proxy"
  [Grafana]="grafana"
  [Newt]="newt"
)

echo "==> Ensuring network '$NET' exists..."
if ! docker network inspect "$NET" >/dev/null 2>&1; then
  docker network create "$NET"
  echo "    Created network: $NET"
else
  echo "    Network already exists."
fi

connect_if_needed () {
  local cname="$1"
  local alias="$2"

  # Check container exists
  if ! docker inspect "$cname" >/dev/null 2>&1; then
    echo "!! Skipping '$cname' – container not found."
    return 0
  fi

  # Check if already attached
  if docker inspect -f '{{json .NetworkSettings.Networks}}' "$cname" | grep -q "\"$NET\""; then
    echo "-- '$cname' already on '$NET' (alias may already be present)."
    return 0
  fi

  echo "++ Connecting '$cname' to '$NET' with alias '$alias'..."
  docker network connect --alias "$alias" "$NET" "$cname"
  echo "   Connected."
}

echo "==> Connecting containers to '$NET'..."
for cname in "${!MAP[@]}"; do
  connect_if_needed "$cname" "${MAP[$cname]}"
done

echo "==> Done."