Add helper script to build incus images (#26)

Signed-off-by: Kentaro Hayashi <hayashi@clear-code.com>

Author: kenhys

incus/Makefile

@@ -0,0 +1,14 @@
+all:
+
+clean:
+	./build.sh clean
+
+build:
+	./build.sh image
+
+simplestreams:
+	sudo rm -rf images streams
+	sudo incus-simplestreams add --alias ubuntu/20.04 --alias ubuntu/focal ./build/focal-amd64/incus.tar.xz ./build/focal-amd64/rootfs.squashfs
+	sudo incus-simplestreams add --alias ubuntu/20.04 --alias ubuntu/focal ./build/focal-arm64/incus.tar.xz ./build/focal-arm64/rootfs.squashfs
+	sudo incus-simplestreams add --alias ubuntu/26.04 --alias ubuntu/resolute ./build/resolute-amd64/incus.tar.xz ./build/resolute-amd64/rootfs.squashfs
+	sudo incus-simplestreams add --alias ubuntu/26.04 --alias ubuntu/resolute ./build/resolute-arm64/incus.tar.xz ./build/resolute-arm64/rootfs.squashfs

incus/build.sh

@@ -0,0 +1,85 @@
+#!/usr/bin/bash
+
+function error()
+{
+    MSG="$1"
+    echo -e "\e[31;40m[ERROR]\e[0m $MSG"
+}
+
+function info()
+{
+    MSG="$1"
+    echo -e "\e[32;40m[INFO]\e[0m $MSG"
+}
+
+function clean()
+{
+    sudo rm -fr build images streams focal.arm64.yaml resolute.arm64.yaml focal.amd64.yaml resolute.amd64.yaml
+}
+
+function usage()
+{
+    echo  "Usage: $0 image"
+    exit 0
+}
+
+
+function build_image()
+{
+    TARGET_CODE=$1
+    TARGET_VARIANT=$2
+    TARGET_ARCH=$3
+    OUTPUT_DIR="build/${TARGET_CODE}-${TARGET_ARCH}"
+    mkdir -p build
+    sudo distrobuilder build-incus "${TARGET_CODE}.${TARGET_ARCH}.yaml" "$OUTPUT_DIR"
+    printf "ubuntu\n${TARGET_CODE}\n${TARGET_VARIANT}\n${TARGET_ARCH}\n\n" | sudo incus-simplestreams generate-metadata "$OUTPUT_DIR/incus.tar.xz"
+}
+
+function build_all_images()
+{
+    for code in focal resolute; do
+        for arch in amd64 arm64; do
+            if [ -f "build/${code}-${arch}/rootfs.squashfs" ] && [ -f "build/${code}-${arch}/incus.tar.xz" ]; then
+                info "skip ${code} ${arch}"
+                continue
+            fi
+            info "generate ${code}.${arch}.yaml"
+            rm -f ${code}.${arch}.yaml
+            case $arch in
+                arm64)
+                    sed -e "s/architecture: amd64/architecture: ${arch}/g" \
+	                -e "s/focal-amd64/${code}-arm64/g" \
+	                -e "s/release: focal/release: ${code}/g" \
+	                -e 's,url: http://ftp.riken.jp/Linux/ubuntu,url: https://linux.yz.yamagata-u.ac.jp/pub/linux/ubuntu-ports/,' \
+	                template.yaml > ${code}.${arch}.yaml
+                    ;;
+                amd64)
+                    sed -e "s/architecture: amd64/architecture: ${arch}/g" \
+	                -e "s/release: focal/release: ${code}/g" \
+	                -e "s/focal-amd64/${code}-amd64/g" \
+	                template.yaml > ${code}.${arch}.yaml
+                    ;;
+            esac
+            case $code in
+                focal)
+                    build_image ${code} 20.04 ${arch}
+                    ;;
+                resolute)
+                    build_image ${code} 26.04 ${arch}
+                    ;;
+	    esac
+        done
+    done
+}
+
+case $1 in
+    clean)
+        clean
+        ;;
+    image)
+        build_all_images
+        ;;
+    *)
+        usage
+        ;;
+esac