scripts: add minirootfs release image

3 files changed, 78 insertions, 1 deletions

diff --git a/scripts/genrootfs.sh b/scripts/genrootfs.sh
new file mode 100755
index 0000000000..9c9df40bb1
--- /dev/null
+++ b/scripts/genrootfs.sh
@@ -0,0 +1,56 @@
+#!/bin/sh -e
+
+cleanup() {
+        rm -rf "$tmp"
+}
+
+tmp="$(mktemp -d)"
+trap cleanup EXIT
+
+arch="$(apk --print-arch)"
+repositories_file=/etc/apk/repositories
+keys_dir=/etc/apk/keys
+
+while getopts "a:r:k:o:" opt; do
+        case $opt in
+        a) arch="$OPTARG";;
+        r) repositories_file="$OPTARG";;
+        k) keys_dir="$OPTARG";;
+        o) outfile="$OPTARG";;
+        esac
+done
+shift $(( $OPTIND - 1))
+
+cat "$repositories_file"
+
+if [ -z "$outfile" ]; then
+        outfile=$name-$arch.tar.gz
+fi
+
+${APK:-apk} add --keys-dir "$keys_dir" \
+        --repositories-file "$repositories_file" \
+        --no-script --no-cache --root "$tmp" --initdb \
+        "$@"
+for link in $("$tmp"/bin/busybox --list-full); do
+        [ -e "$tmp"/$link ] || ln -s /bin/busybox "$tmp"/$link
+done
+
+${APK:-apk} fetch --keys-dir "$keys_dir" \
+        --repositories-file "$repositories_file" \
+        --stdout alpine-base | tar -zx -C "$tmp" etc/
+
+branch=edge
+VERSION_ID=$(awk -F= '$1=="VERSION_ID" {print $2}'  "$tmp"/etc/os-release)
+case $VERSION_ID in
+*_alpha*|*_beta*) branch=edge;;
+*.*.*) branch=v${VERSION_ID%.*};;
+esac
+
+cat > "$tmp"/etc/apk/repositories <<EOF
+http://dl-cdn.alpinelinux.org/alpine/$branch/main
+http://dl-cdn.alpinelinux.org/alpine/$branch/community
+EOF
+
+#rm -rf "$tmp"/var/cache/apk/*
+
+tar --numeric-owner -c -C "$tmp" . | gzip -9n > "$outfile"
diff --git a/scripts/mkimage.sh b/scripts/mkimage.sh
index 07ff24b26f..14fa2a60fd 100755
--- a/scripts/mkimage.sh
+++ b/scripts/mkimage.sh
@@ -172,7 +172,7 @@ build_profile() {
 
         if [ "$_dirty" = "yes" -o ! -e "$output_file" ]; then
                 # Create image
-                output_format="${image_ext//[:\.]/}"
+                [ -n "$output_format" ] || output_format="${image_ext//[:\.]/}"
                 create_image_${output_format} || { _fail="yes"; false; }
 
                 if [ "$_checksum" = "yes" ]; then
diff --git a/scripts/mkimg.minirootfs.sh b/scripts/mkimg.minirootfs.sh
new file mode 100755
index 0000000000..4753f093f1
--- /dev/null
+++ b/scripts/mkimg.minirootfs.sh
@@ -0,0 +1,21 @@
+section_minirootfs() {
+        return 0
+}
+
+create_image_rootfs() {
+        local _script=$(readlink -f "$scriptdir/genrootfs.sh")
+        local output_file="$(readlink -f ${OUTDIR:-.})/$output_filename"
+
+        (cd "$OUTDIR"; fakeroot "$_script" -k "$APKROOT"/etc/apk/keys \
+                -r "$APKROOT"/etc/apk/repositories \
+                -o "$output_file" \
+                -a $ARCH \
+                $rootfs_apks)
+}
+
+profile_minirootfs() {
+        image_ext=tar.gz
+        output_format=rootfs
+        arch="x86 x86_64 armhf aarch64"
+        rootfs_apks="busybox alpine-baselayout alpine-keys apk-tools libc-utils"
+}