fix docker-build make target (#100)

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## What was changed
fix docker-build make target
## Why?
test is no longer a real make target, and we have tests running in CI,
so its not necessary to run tests before docker build
## Checklist
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1. Closes <!-- add issue number here -->

2. How was this tested:
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3. Any docs updates needed?
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Author: carlydf

Makefile

@@ -221,7 +221,7 @@ run: manifests generate fmt vet ## Run a controller from your host.
 # (i.e. docker build --platform linux/arm64 ). However, you must enable docker buildKit for it.
 # More info: https://docs.docker.com/develop/develop-images/build_enhancements/
 .PHONY: docker-build
-docker-build: test ## Build docker image with the manager.
+docker-build: ## Build docker image with the manager.
 	$(CONTAINER_TOOL) build -t ${IMG} .
 
 .PHONY: docker-push