fix(deploy.sh): use straight docker login for dockerhub

Author: Seth Goings

_scripts/deploy.sh

@@ -6,7 +6,7 @@
 cd "$(dirname "$0")" || exit 1
 
 export IMAGE_PREFIX=deisci BUILD_TAG=v2-alpha
-docker login -e="$DOCKER_EMAIL" -u="$DOCKER_USERNAME" -p="$DOCKER_PASSWORD" docker.io
-DEIS_REGISTRY=docker.io  make -C .. docker-build docker-push
+docker login -e="$DOCKER_EMAIL" -u="$DOCKER_USERNAME" -p="$DOCKER_PASSWORD"
+DEIS_REGISTRY=''  make -C .. docker-build docker-push
 docker login -e="$QUAY_EMAIL" -u="$QUAY_USERNAME" -p="$QUAY_PASSWORD" quay.io
 DEIS_REGISTRY=quay.io make -C .. docker-build docker-push