#!/bin/bash

REGISTRY_1_USER="user"
REGISTRY_1_DOMAIN="domain.com"
REGISTRY_1_GITEA_AUTH="0000000000000000000000000000000000000000"

REGISTRY_2_USER=
REGISTRY_2_DOMAIN=
REGISTRY_2_GITEA_AUTH=

# And so on...

# And then you set it, example:

export TARGET_REGISTRY_USER=$REGISTRY_1_USER
export TARGET_REGISTRY_DOMAIN=$REGISTRY_1_DOMAIN
export GITEA_AUTH_TOKEN=$REGISTRY_1_GITEA_AUTH