Add cirrus CI

.cirrus.expect

@@ -0,0 +1,8 @@
+#!/usr/bin/expect
+
+set timeout -1
+
+spawn ./rootfs.sh qemu-system-x86_64 3500M
+expect -exact {not syncing: Attempted to kill init}
+send -- "\x01"
+send -- "x"

.cirrus.yml

@@ -0,0 +1,38 @@
+container:
+  image: potyarkin/molecule:host-kvm
+  kvm: true
+  cpu: 2
+  memory: 4G
+
+lint_task:
+  install_script:
+    - apt-get -y update
+    - apt-get -y dist-upgrade
+    - apt-get -y install shellcheck
+    - apt-get -y clean
+  check_script:
+    - shellcheck rootfs.sh
+
+run_task:
+  # Required background services
+  dbus_background_script:
+    - mkdir -p /var/run/dbus
+    - /usr/bin/dbus-daemon --system --nofork --nopidfile
+  virtlogd_background_script:
+    - /usr/sbin/virtlogd
+  libvirtd_background_script:
+    - sleep 2 && /usr/sbin/libvirtd
+  iptables_legacy_script:
+    - update-alternatives --set iptables /usr/sbin/iptables-legacy
+  deps_script:
+    - apt-get -y update
+    - apt-get -y dist-upgrade
+    - apt-get -y install sudo git cpio linux-image-4.19.0-13-amd64 expect wget
+    - apt-get -y clean
+  submodule_script:
+    - git submodule update --init --recursive
+  kernel_script:
+    - cp /boot/vmlinuz-4.19.0-13-amd64 ./kernel
+  run_script:
+    - ./.cirrus.expect | tee -a /tmp/run.log
+    - grep -q 'Bootstrapping completed.' /tmp/run.log

rootfs.sh

@@ -129,7 +129,7 @@ if [ "${QEMU_CMD}" = 'chroot' ]; then
 	sudo PATH="/after/bin:${PATH}" chroot . /init
 else
 	${QEMU_CMD} -enable-kvm \
-	    -m "${QEMU_RAM:-8G}" \
+	    -m "${QEMU_RAM}" \
 	    -nographic \
 	    -no-reboot \
 	    -kernel ../../kernel -initrd initramfs.igz -append console=ttyS0

sysa/after.kaem.run

@@ -129,3 +129,5 @@ pkg="m4-1.4"
 cd ${pkg}
 kaem --file ${pkg}.kaem
 cd ..
+
+echo "Bootstrapping completed."