feat: oci packer can now use mksquashfs if available (#70)

* feat: oci packer can now use mksquashfs if available

* fix: use nproc in kernel build script for default jobs, and fix DEV.md guide

* feat: working erofs backend

hack/dist/apk.sh

@@ -19,6 +19,8 @@ fpm -s tar -t apk \
   --license agpl3 \
   --version "${KRATA_VERSION}" \
   --architecture "${TARGET_ARCH}" \
+  --depends "squashfs-tools" \
+  --depends "erofs-utils" \
   --description "Krata Hypervisor" \
   --url "https://krata.dev" \
   --maintainer "Edera Team <[email protected]>" \

hack/dist/deb.sh

@@ -20,6 +20,8 @@ fpm -s tar -t deb \
   --version "${KRATA_VERSION}" \
   --architecture "${TARGET_ARCH_DEBIAN}" \
   --depends "xen-system-${TARGET_ARCH_DEBIAN}" \
+  --depends "squashfs-tools" \
+  --depends "erofs-utils" \
   --description "Krata Hypervisor" \
   --url "https://krata.dev" \
   --maintainer "Edera Team <[email protected]>" \