fix: set ubuntu release

Author: jobcespedes

Makefile

@@ -1,14 +1,16 @@
 UID := $(shell id -u)
-JETSON_VERSIONS ?= 36.4.3 35.6.1
-JETSON_VERSION ?= $(firstword $(JETSON_VERSIONS))
+JETSON_VERSION_PAIRS ?= 36.4.3,jammy 35.6.1,focal
+JETSON_SAMPLEFS_VERSIONS ?= jammy focal
+JETSON_VERSION ?= $(shell echo $(JETSON_VERSION_PAIRS) | cut -d, -f1)
 JETSON_LINUX_BUILDER_IMAGE_FROM ?= ghcr.io/getdevopspro/jetson-linux-builder:$(JETSON_VERSION)
 JETSON_SAMPLEFS_ABI ?= aarch64
 JETSON_SAMPLEFS_DISTRO ?= ubuntu
 JETSON_SAMPLEFS_FLAVOR ?= minimal
-JETSON_SAMPLEFS_VERSION ?= jammy
+# first item of JETSON_VERSIONS_AND_SAMPLEFS_VERSION and after comma
+JETSON_SAMPLEFS_VERSION ?= $(word 2,$(subst , ,$(firstword $(JETSON_VERSIONS_AND_SAMPLEFS_VERSION))))
 
-build-rootfs-variant:
-	docker run -it --rm \
+build-rootfs-variant: ## Build a rootfs variant
+	docker run --rm \
 		--privileged \
 		--network host \
 		-v $(PWD):/workspace/shared \
@@ -24,4 +26,4 @@ build-rootfs-variant:
 			cp -p sample_fs.tbz2 /workspace/shared/sample_fs-$(JETSON_VERSION)-$(JETSON_SAMPLEFS_FLAVOR).tbz2'
 
 build-rootfs-variants: ## Build all rootfs variants
-	for version in $(JETSON_VERSIONS); do $(MAKE) build-rootfs-variant JETSON_VERSION=$$version; done
+	for version_pair in $(JETSON_VERSION_PAIRS); do $(MAKE) build-rootfs-variant JETSON_VERSION=$${version_pair%%,*} JETSON_SAMPLEFS_VERSION=$${version_pair#*,}; done