Tag docker images before pushing (#5570)

## Motivation
The dockerhub GH actions workflow was broken in #5532. An example of a failed action: https://github.com/spacemeshos/go-spacemesh/actions/runs/7758833803.

Makefile

@@ -153,6 +153,7 @@ dockerpush-only:
 ifneq ($(DOCKER_USERNAME):$(DOCKER_PASSWORD),:)
 	echo "$(DOCKER_PASSWORD)" | docker login -u "$(DOCKER_USERNAME)" --password-stdin
 endif
+	docker tag go-spacemesh:$(SHA) $(DOCKER_HUB)/$(DOCKER_IMAGE_REPO):$(DOCKER_IMAGE_VERSION)
 	docker push $(DOCKER_HUB)/$(DOCKER_IMAGE_REPO):$(DOCKER_IMAGE_VERSION)
 .PHONY: dockerpush-only
 
@@ -167,6 +168,7 @@ dockerpush-bs-only:
 ifneq ($(DOCKER_USERNAME):$(DOCKER_PASSWORD),:)
 	echo "$(DOCKER_PASSWORD)" | docker login -u "$(DOCKER_USERNAME)" --password-stdin
 endif
+	docker tag go-spacemesh-bs:$(SHA) $(DOCKER_HUB)/$(DOCKER_IMAGE_REPO)-bs:$(DOCKER_IMAGE_VERSION)
 	docker push $(DOCKER_HUB)/$(DOCKER_IMAGE_REPO)-bs:$(DOCKER_IMAGE_VERSION)
 .PHONY: dockerpush-bs-only