install dendrite to /usr/, add service and postinst

packages/normal/dendrite/DEBBUILD

@@ -10,6 +10,7 @@ maintainer="Leafee98 <me@leafee98.com>"
 
 source=(
     "dendrite::git+https://github.com/matrix-org/dendrite.git#tag=v${pkgver}"
+    "dendrite.service::materials/dendrite.service"
 )
 
 function build {
@@ -22,8 +23,23 @@ function build {
 function package {
     for f in ${srcdir}/dendrite/bin/*
     do
-        install -Dm755 -t "${pkgdir}/usr/local/lib/dendrite/" "$f";
+        install -Dm755 -t "${pkgdir}/usr/lib/dendrite/" "$f";
     done
 
     install -Dm644 "${srcdir}/dendrite/dendrite-sample.yaml" "${pkgdir}/etc/dendrite/dendrite-sample.yaml"
+    install -Dm755 "${srcdir}/dendrite.service" "${pkgdir}/usr/lib/systemd/system/dendrite.service"
+}
+
+function debian_postinst {
+    cat << 'EOF'
+#!/usr/bin/env bash
+
+adduser --system dendrite
+
+systemctl daemon-reload
+
+if systemctl is-active --quiet dendrite.service ; then
+    systemctl restart dendrite.service
+fi
+EOF
 }

packages/normal/dendrite/materials/dendrite.service

@@ -0,0 +1,18 @@
+[Unit]
+Description=matrix home server
+After=network.target
+After=postgresql.service
+After=nats-server.service
+
+[Service]
+Type=simple
+User=dendrite
+Group=dendrite
+ExecStart=/usr/lib/dendrite/dendrite -config /etc/dendrite/dendrite.yaml -http-bind-address 127.0.0.1:8008
+Restart=on-failure
+RestartSec=5s
+LimitNOFILE=65535
+MemoryMax=3072M
+
+[Install]
+WantedBy=multi-user.target