Set the default rootfs image name to the directory basename

Author: gsingh93

.github/workflows/build.yml

@@ -176,7 +176,7 @@ jobs:
     - name: Initialize rootfs and initramfs
       run: |
         make rootfs-init
-        ROOTFS=./rootfs-${{ matrix.arch }} make rootfs-init
+        ROOTFS=./alpine-${{ matrix.arch }} make rootfs-init
 
         make cpio
         ROOTFS_DIR=./rootfs/alpine-${{ matrix.arch }} make cpio
@@ -200,7 +200,7 @@ jobs:
       uses: actions/upload-artifact@v3
       with:
         name: rootfs
-        path: rootfs/rootfs-${{ matrix.arch }}.img
+        path: rootfs/alpine-${{ matrix.arch }}.img
 
   release:
     runs-on: ubuntu-22.04

Makefile

@@ -238,7 +238,7 @@ tools-vm_clean:
 ##
 
 ROOTFS_PARENT_DIR := $(ROOT_DIR)/rootfs
-ROOTFS ?= $(ROOTFS_PARENT_DIR)/rootfs-$(ARCH).img
+ROOTFS ?= $(ROOTFS_PARENT_DIR)/$$(basename $(ROOTFS_DIR)).img
 ROOTFS_FORMAT ?= qcow2
 ROOTFS_DIR ?= $(ROOTFS_PARENT_DIR)/alpine-$(ARCH)
 CPIO_FILE ?= $(ROOTFS_PARENT_DIR)/$$(basename $(ROOTFS_DIR)).cpio.gz