Add deb package and nightly distribution (#1977)

- Add publishing automated debian package releases via Cloudsmith.io, which allows evcc to be installed and updated via `apt`
- Add nightly docker (:latest) and deb distribution
- Disable docker builds for every commit on master
- Allow nightly builds to be triggered manually

packaging/scripts/postinstall.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+set -e
+
+if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
+	# This will only remove masks created by d-s-h on package removal.
+	deb-systemd-helper unmask evcc.service >/dev/null || true
+
+	# was-enabled defaults to true, so new installations run enable.
+	if deb-systemd-helper --quiet was-enabled evcc.service; then
+		# Enables the unit on first installation, creates new
+		# symlinks on upgrades if the unit file has changed.
+		deb-systemd-helper enable evcc.service >/dev/null || true
+	else
+		# Update the statefile to add new symlinks (if any), which need to be
+		# cleaned up on purge. Also remove old symlinks.
+		deb-systemd-helper update-state evcc.service >/dev/null || true
+	fi
+
+	# Restart only if it was already started
+	if [ -d /run/systemd/system ]; then
+		systemctl --system daemon-reload >/dev/null || true
+		if [ -n "$2" ]; then
+			deb-systemd-invoke try-restart evcc.service >/dev/null || true
+		fi
+	fi
+fi

packaging/scripts/postremove.sh

@@ -0,0 +1,18 @@
+set -e
+
+if [ -d /run/systemd/system ]; then
+	systemctl --system daemon-reload >/dev/null || true
+fi
+
+if [ "$1" = "remove" ]; then
+	if [ -x "/usr/bin/deb-systemd-helper" ]; then
+		deb-systemd-helper mask evcc.service >/dev/null || true
+	fi
+fi
+
+if [ "$1" = "purge" ]; then
+	if [ -x "/usr/bin/deb-systemd-helper" ]; then
+		deb-systemd-helper purge evcc.service >/dev/null || true
+		deb-systemd-helper unmask evcc.service >/dev/null || true
+	fi
+fi

packaging/scripts/preremove.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+set -e
+
+if [ -d /run/systemd/system ] && [ "$1" = remove ]; then
+	deb-systemd-invoke stop evcc.service >/dev/null || true
+fi