add: debian file, perform various fixes

scripts/build_deb.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+mkdir -p dbuild/usr/local/bin
+mkdir -p dbuild/etc/
+mkdir -p dbuild/etc/systemd/system/
+mkdir -p dbuild/DEBIAN
+
+cat <<EOF > dbuild/DEBIAN/control
+Package: watcher
+Version: 0.2
+Maintainer: Charles
+Architecture: all
+Description: Watches cameras and temp sensors
+EOF
+
+cat <<EOF > dbuild/DEBIAN/postinst
+#!/bin/bash
+
+systemctl daemon-reload
+# Make sure its enabled
+systemctl enable --now watcher
+# Restart it; it might have already been installed and running
+systemctl restart watcher
+EOF
+chmod +x dbuild/DEBIAN/postinst
+
+GOOS=linux GOARCH=arm64 go build -o dbuild/usr/local/bin/watcher ./cmd/watcher
+
+cp ./rpi_camera.yaml dbuild/etc/watcher_config.yaml
+cp ./watcher.systemd dbuild/etc/systemd/system/watcher.service
+cp ./temperature.py dbuild/usr/local/bin/
+
+
+dpkg-deb --build dbuild