Invalid reference format

[Strafo]

When using the script: docker-sdk.sh
with:

• VERSION 18.06.1
• TARGETS=x86-64

I run into the following error:

+ docker build --build-arg CI_REGISTRY_IMAGE --file ./build/Dockerfile --tag ojhgdohtnzzzgjaignmpkosogddrugtp ./build
Sending build context to Docker daemon    350MB
Step 1/8 : ARG CI_REGISTRY_IMAGE
Step 2/8 : FROM $CI_REGISTRY_IMAGE:base
invalid reference format
+ exit 1

threw by docker-build.sh at line 9:

docker build \
	--build-arg CI_REGISTRY_IMAGE \
	--file "./build/Dockerfile" \
	--tag "$TMP_IMAGE_NAME" \
	./build