Add net-im/dendrite

Signed-off-by: Shin'ya Minazuki <shinyoukai@laidback.moe>

net-im/dendrite/files/dendrite.initd-r0

@@ -0,0 +1,25 @@
+#!/sbin/openrc-run
+# Copyright 2026 Shin'ya Minazuki
+
+supervisor="supervise-daemon"
+
+command="/usr/sbin/${RC_SVCNAME}"
+command_args="--config /etc/${RC_SVCNAME}.yaml"
+command_user="${RC_SVCNAME}"
+command_background="true"
+pidfile="/run/${RC_SVCNAME}.pid"
+
+depend() {
+	# PostgreSQL is not listed here due to the SLOT mechanism
+	# used by the package manager.
+	# Latest stable version to date is postgresql-18
+	want caddy nginx
+}
+
+start_pre() {
+	if ! checkpath --file /etc/${RC_SVCNAME}.yaml -; then
+		eerror "You need a configuration file to proceed"
+		eerror "See /usr/sbin/dendrite-generate-config"
+	fi
+	eend $?
+}