chore: remove image based FBC and replace with dynamic generation

Signed-off-by: Jakob Möller <jmoller@redhat.com>

Makefile

@@ -97,6 +97,32 @@ REPLACES ?=
 # but can skip several. This can be accomplished using the skipRange annotation:
 SKIP_RANGE ?=
 
+## Variables for the catalog
+
+# CATALOG_IMG defines the image used for the catalog.
+CATALOG_IMAGE_NAME ?= $(IMAGE_NAME)-catalog
+CATALOG_REPO ?= $(IMAGE_REGISTRY)/$(REGISTRY_NAMESPACE)/$(CATALOG_IMAGE_NAME)
+CATALOG_IMG ?= $(CATALOG_REPO):$(IMAGE_TAG)
+CATALOG_DIR ?= ./catalog
+
+define CATALOG_CHANNEL
+---
+schema: olm.channel
+package: $(IMAGE_NAME)
+name: alpha
+entries:
+  - name: lvms-operator.v$(OPERATOR_VERSION)
+endef
+export CATALOG_CHANNEL
+
+define CATALOG_PACKAGE
+---
+schema: olm.package
+name: $(IMAGE_NAME)
+defaultChannel: alpha
+endef
+export CATALOG_PACKAGE
+
 ##@ Development
 
 manifests: controller-gen ## Generate WebhookConfiguration, ClusterRole and CustomResourceDefinition objects.
@@ -231,31 +257,20 @@ bundle-push: ## Push the bundle image.
 	$(MAKE) docker-push IMG=$(BUNDLE_IMG)
 
 ##@ Catalog image
-
-# A comma-separated list of bundle images (e.g. make catalog-build BUNDLE_IMGS=example.com/operator-bundle:v0.1.0,example.com/operator-bundle:v0.2.0).
-# These images MUST exist in a registry and be pull-able.
-BUNDLE_IMGS ?= $(BUNDLE_IMG)
-
-# CATALOG_IMG defines the image used for the catalog.
-CATALOG_IMAGE_NAME ?= $(IMAGE_NAME)-catalog
-CATALOG_REPO ?= $(IMAGE_REGISTRY)/$(REGISTRY_NAMESPACE)/$(CATALOG_IMAGE_NAME)
-CATALOG_IMG ?= $(CATALOG_REPO):$(IMAGE_TAG)
-
-# Set CATALOG_BASE_IMG to an existing catalog image tag to add $BUNDLE_IMGS to that image.
-ifneq ($(origin CATALOG_BASE_IMG), undefined)
-FROM_INDEX_OPT := --from-index $(CATALOG_BASE_IMG)
-endif
-
-.PHONY: catalog-render
-catalog-render: opm ## Render the catalog based on the given bundle
-	$(OPM) render $(BUNDLE_IMG) -oyaml > ./catalog/lvms-operator/operator.yaml
-	$(OPM) validate ./catalog
+.PHONY: catalog
+catalog: ## Render a catalog from the bundle by wrapping it in a alpha channel.
+	@echo "Rendering the catalog at $(CATALOG_DIR)"
+	@rm -rf $(CATALOG_DIR)
+	@mkdir -p $(CATALOG_DIR)/$(IMAGE_NAME)
+	@echo "$$CATALOG_CHANNEL" > $(CATALOG_DIR)/channel.yaml
+	@echo "$$CATALOG_PACKAGE" > $(CATALOG_DIR)/package.yaml
+	$(OPM) render ./bundle -oyaml > $(CATALOG_DIR)/$(IMAGE_NAME)/v$(OPERATOR_VERSION).yaml
+	$(OPM) validate $(CATALOG_DIR)
 
 .PHONY: catalog-build
-catalog-build: opm catalog-render ## Build a catalog image.
+catalog-build: opm catalog ## Build a catalog image from the rendered catalog.
 	$(IMAGE_BUILD_CMD) build -f catalog.Dockerfile -t $(CATALOG_IMG) .
 
-# Push the catalog image.
 .PHONY: catalog-push
 catalog-push: ## Push a catalog image.
 	$(MAKE) docker-push IMG=$(CATALOG_IMG)
@@ -326,7 +341,7 @@ ifeq (,$(shell which opm 2>/dev/null))
 	set -e ;\
 	mkdir -p $(dir $(OPM)) ;\
 	OS=$(shell go env GOOS) && ARCH=$(shell go env GOARCH) && \
-	curl -sSLo $(OPM) https://github.com/operator-framework/operator-registry/releases/download/v1.36.0/$${OS}-$${ARCH}-opm ;\
+	curl -sSLo $(OPM) https://github.com/operator-framework/operator-registry/releases/download/v1.39.0/$${OS}-$${ARCH}-opm ;\
 	chmod +x $(OPM) ;\
 	}
 else