AWS ECR token refresh script

ecr_secrets_refresher.sh

#!/bin/bash

HELP_MSG="This script read the AWS credentials from the execution environment and does the docker-login via the AWS-CLI utility.\n
Available arguments: '-s' for the name of the ECR secret will add, '-p' for the profile, '-h' for this message."

while getopts :r:p:h: option
do
  case "${option}"
    in
    r) AWS_REGION="$OPTARG";;
    p) AWS_PROFILE="$OPTARG";;
    h) NEED_HELP="1";;
    *) NEED_HELP="1";;
  esac
done

if [[ "$#" -eq 0 ]]
then
  echo -e  "$HELP_MSG"
  exit 1
fi

if [[ "$NEED_HELP" -eq 1 ]]
then
  echo -e "$HELP_MSG"
  exit 1
fi

$(aws --region $AWS_REGION ecr get-login --no-include-email --profile $AWS_PROFILE)

Usage example for cron:

0 * * * * /usr/local/bin/ecr_secrets_refresher.sh -p my_aws_profile -r us-east-1