Move ECR_DOCKER_REGISTRY, ECR_DOCKER_IMAGE, AWS_DEFAULT_REGION into circleci environment variables
Move ECR_DOCKER_REGISTRY, ECR_DOCKER_IMAGE, AWS_DEFAULT_REGION into circleci environment variables

ministryofjustice/cla_frontend,ministryofjustice/cla_frontend,ministryofjustice/cla_frontend,ministryofjustice/cla_frontend