docker compose: Create tmp files to retrieve external port from container

after-compose-up.sh

# Create port mapping files for each service/port combination
docker compose ps --format=json | jq -r '
  .Service as $service | 
  .Publishers[]? | 
  select(.PublishedPort > 0) | 
  "/tmp/compose_\($service)_\(.TargetPort)_\(.Protocol) \(.PublishedPort)"
' | while read -r filepath port; do
    echo "$port" | docker compose exec -T <target> tee "$filepath" >/dev/null
done