change build to just tag - leverage the prev build

Signed-off-by: Aviel Segev <[email protected]>

Makefile

@@ -94,11 +94,11 @@ build-agent: bin
 # rebuild container only on source changes
 bin/.migration-planner-agent-container: bin Containerfile.agent go.mod go.sum $(GO_FILES)
 	$(PODMAN) build . --build-arg VERSION=$(SOURCE_GIT_TAG) -f Containerfile.agent -t $(MIGRATION_PLANNER_AGENT_IMAGE):latest
-	$(PODMAN) build . --build-arg VERSION=$(SOURCE_GIT_TAG) -f Containerfile.agent -t $(MIGRATION_PLANNER_AGENT_IMAGE):$(REGISTRY_TAG)
+	$(PODMAN) image tag $(MIGRATION_PLANNER_AGENT_IMAGE):latest $(MIGRATION_PLANNER_AGENT_IMAGE):$(REGISTRY_TAG)
 
 bin/.migration-planner-api-container: bin Containerfile.api go.mod go.sum $(GO_FILES)
 	$(PODMAN) build . -f Containerfile.api -t $(MIGRATION_PLANNER_API_IMAGE):latest
-	$(PODMAN) build . -f Containerfile.api -t $(MIGRATION_PLANNER_API_IMAGE):$(REGISTRY_TAG)
+	$(PODMAN) image tag $(MIGRATION_PLANNER_API_IMAGE):latest $(MIGRATION_PLANNER_API_IMAGE):$(REGISTRY_TAG)
 
 migration-planner-api-container: bin/.migration-planner-api-container
 migration-planner-agent-container: bin/.migration-planner-agent-container