chore: add single arch support

Signed-off-by: Denis Baryshev <[email protected]>

.github/workflows/verify.yml

@@ -30,4 +30,3 @@ jobs:
 
     - name: Build multi-arch images and binaries
       run: make clean multiarch-tar
-

Makefile

@@ -22,6 +22,7 @@ BATS_TEST ?= test
 DOCKER ?= docker
 export DOCKER
 PLATFORM ?= linux/amd64
+PLATFORM_ARCH = $(subst /,-,$(ARCH))
 ARCH = $(shell echo "$(PLATFORM)" | sed -E 's!linux/([^/]+).*!\1!')
 IMAGE_EXPORT_DIR = $(BUILD_DIR)/images/$@
 BUILDX_BUILDER ?= podman-builder
@@ -40,6 +41,11 @@ multiarch-tar: BUILDX_OUTPUT = type=local,dest=$(IMAGE_EXPORT_DIR)
 multiarch-tar: TAR_TARGET ?= tar
 multiarch-tar: images tar-all
 
+# Single arch builds don't have nested arch directory, thus set path as for multiarch
+singlearch-tar: $(PLATFORM_ARCH)-tar
+$(PLATFORM_ARCH)-tar: BUILDX_OUTPUT = type=local,dest=$(IMAGE_EXPORT_DIR)/linux_$(ARCH)
+$(PLATFORM_ARCH)-tar: images tar
+
 multiarch-images: BUILDX_OUTPUT = type=image
 multiarch-images: images