Added more Linux packaging configuration

Cargo.toml

@@ -7,8 +7,6 @@ readme = "README.md"
 license = "BSD 2-Clause"
 authors = ["Gregory Ballantine <gballantine@bitgoblin.tech>"]
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 toml = "0.5"
 serde = "1.0"
@@ -17,7 +15,7 @@ shellexpand = "2.1"
 
 [package.metadata.deb]
 license-file = "LICENSE"
-maintainer-scripts = "build/debian/service"
+maintainer-scripts = "build/debian/scripts"
 depends = "ffmpeg (>= 4)"
 section = "video"
 assets = [
@@ -26,6 +24,7 @@ assets = [
 	["README.md", "usr/share/doc/adept/README", "644"]
 ]
 [package.metadata.deb.systemd-units]
+unit-scripts = "build/debian/service"
 unit-name = "adept.service"
 enable = true
 start = true
@@ -36,5 +35,6 @@ assets = [
   { source = "build/etc/example.toml", dest = "/etc/adept/example.toml", mode = "755"},
   { source = "README.md", dest = "/usr/share/doc/adept/README", mode = "644"}
 ]
+post_install_script = "build/script/postinst"
 [package.metadata.generate-rpm.requires]
 ffmpeg = ">= 4"

build/debian/service/adept.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=Adept video transcoder service
+
+[Service]
+User=adept
+Group=adept
+ExecStart=/usr/bin/adept
+SuccessExitStatus=143
+
+[Install]
+WantedBy=multi-user.target

build/scripts/postinst

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+GETENT_USER=$(getent passwd adept)
+GETENT_GROUP=$(getent group adept)
+
+# Create the adept user if it doesn't already exist
+if [ "$GETENT_USER" = "" ]; then
+	useradd -r adept
+else
+	echo "The 'adept' user already exists, skipping creation."
+fi
+
+# Create the adept group if it doesn't already exist
+if [ "$GETENT_GROUP" = "" ]; then
+	groupadd adept
+	usermod -aG adept adept
+else
+	echo "The 'adept' group already exists, skipping creation."
+fi
+
+# Change the directory ownership of /etc
+chown -R adept:adept /etc/adept