chore(ci): add ci

Signed-off-by: Kevin Cui <bh@bugs.cc>

.editorconfig

@@ -0,0 +1,8 @@
+root = true
+
+[*]
+charset = utf-8
+
+[*.yml]
+indent_style = space
+indent_size = 2

.github/workflows/release.yml

@@ -0,0 +1,45 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - add-ci
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: true
+      matrix:
+        target:
+          - initrd
+          - rootfs
+          - kernel
+        arch:
+          - arm64
+          - amd64
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+
+      - name: Update kernel submodules
+        if: ${{ matrix.target == 'kernel'}}
+        run: git submodule update --init kernel
+
+      - name: Update buildroot submodules
+        if: ${{ matrix.target != 'kernel'}}
+        run: git submodule update --init buildroot
+
+      - name: Defconfig
+        run: make ${{ matrix.target }}-${{ matrix.arch }}-defconfig
+
+      - name: Build
+        run: make ${{ matrix.target }}-${{ matrix.arch }}-build
+
+      - name: List file
+        run: make print-outpath-${{ matrix.target }}-${{ matrix.arch }}

Makefile

@@ -1,4 +1,4 @@
-.PHONY: %-build build rootfs-%-defconfig rootfs-%-savedefconfig %-nconfig %-menuconfig %-clean clean help rootfs-% initrd-% kernel-%
+.PHONY: %-build build rootfs-%-defconfig rootfs-%-savedefconfig %-nconfig %-menuconfig %-clean clean help rootfs-% initrd-% kernel-% print-outpath-%
 
 ROOTDIR := $(realpath .)
 
@@ -234,6 +234,30 @@ clean: ##@ Clean all build files
 ##@ Misc commands
 ##@
 
+print-outpath-%: ##@ Print out path of specified architecture
+	$(eval _TARGET := $(firstword $(subst -, ,$*)))
+	$(eval _ARCH := $(word 2, $(subst -, ,$*)))
+
+	@case $(_TARGET) in \
+		rootfs) \
+			echo -n $(ROOTDIR)/out/rootfs/$(_ARCH)/images/rootfs.erofs; \
+			;; \
+		initrd) \
+			echo -n $(ROOTDIR)/out/initrd/$(_ARCH)/images/initrd.gz; \
+			;; \
+		kernel) \
+			if [ $(_ARCH) == arm64 ]; then \
+				echo -n $(ROOTDIR)/out/kernel/arm64/arch/arm64/boot/Image; \
+			else \
+				echo -n $(ROOTDIR)/out/kernel/amd64/arch/x86/boot/bzImage; \
+			fi; \
+			;; \
+		*) \
+			printf "Please specify a print-outpath command\n" \
+			exit 1 \
+			;; \
+		esac \
+
 help: ##@ (Default) Print listing of key targets with their descriptions
 	@printf "\nUsage: make <command>\n"
 	@grep -F -h "##@" $(MAKEFILE_LIST) | grep -F -v grep -F | sed -e 's/\\$$//' | awk 'BEGIN {FS = ":*[[:space:]]*##@[[:space:]]*"}; \