Merge branch 'systemd' into 'main'

Add Systemd init system support

Closes #77

See merge request alpine/cloud/tiny-cloud!148

Makefile

@@ -5,7 +5,7 @@ MAN1PAGES = docs/imds.1
 MAN5PAGES = docs/tiny-cloud.conf.5 docs/cloud-config.5 docs/alpine-config.5
 MAN8PAGES = docs/tiny-cloud.8
 
-SUBPACKAGES = core openrc $(CLOUDS)
+SUBPACKAGES = core init $(CLOUDS)
 
 .PHONY: check install $(SUBPACKAGES)
 
@@ -31,9 +31,13 @@ core: $(MAN1PAGES) $(MAN5PAGES) $(MAN8PAGES)
 	install -Dm755 -t "$(PREFIX)"/usr/sbin \
 		sbin/tiny-cloud
 
-openrc:
-	install -Dm755 -t "$(PREFIX)"/etc/init.d \
-		dist/openrc/*
+init:
+	[ $(command -v rc-status) ] && \
+		install -Dm755 -t "$(PREFIX)"/etc/init.d \
+			dist/openrc/*
+	[ $(command -v systemctl) ] && \
+		install -Dm755 -t "$(PREFIX)"/etc/systemd/system \
+			dist/systemd/*
 
 $(CLOUDS):
 	install -Dm644 -t "$(PREFIX)"/usr/lib/tiny-cloud/cloud/$@ \

dist/systemd/tiny-cloud-boot.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Tiny Cloud Bootstrap - boot phase
+
+[Service]
+Type=oneshot
+ExecStart=tiny-cloud boot
+Restart=no
+
+[Install]
+WantedBy=multi-user.target

dist/systemd/tiny-cloud-early.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=Tiny Cloud Bootstrap - early phase
+After=network.target
+
+[Service]
+Type=oneshot
+ExecStart=tiny-cloud early
+Restart=no
+
+[Install]
+WantedBy=multi-user.target

dist/systemd/tiny-cloud-final.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=Tiny Cloud Bootstrap - final phase
+After=tiny-cloud-boot.service tiny-cloud-main.service tiny-cloud-early.service
+
+[Service]
+Type=oneshot
+ExecStart=tiny-cloud final
+Restart=no
+
+[Install]
+WantedBy=multi-user.target

dist/systemd/tiny-cloud-main.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Tiny Cloud Bootstrap - main phase
+After=network.target sshd.service
+
+[Service]
+Type=oneshot
+ExecStart=tiny-cloud main
+Restart=no
+
+[Install]
+WantedBy=multi-user.target
+