feat: use dedicated 'libretime' user

BREAKING CHANGE: The default `www-data` user has been replaced by a dedicated  `libretime` user to run the services. Be sure to change the ownership of the libretime files.

install

@@ -98,7 +98,7 @@ EOF
 
 # Configuration
 # > User used to run LibreTime.
-LIBRETIME_USER=${LIBRETIME_USER:-"www-data"}
+LIBRETIME_USER=${LIBRETIME_USER:-"libretime"}
 # > Listen port for LibreTime.
 LIBRETIME_LISTEN_PORT=${LIBRETIME_LISTEN_PORT:-"80"}
 # > Public URL for LibreTime.
@@ -177,6 +177,8 @@ done
 PYTHON="python3"
 PIP="$PYTHON -m pip"
 
+DEFAULT_WEB_USER="www-data"
+
 # Paths
 CONFIG_DIR="/etc/libretime"
 CONFIG_FILEPATH="$CONFIG_DIR/config.yml"
@@ -394,6 +396,11 @@ prepare_packages_install
 install_packages git make
 make VERSION
 
+info "creating project user"
+if ! id "$LIBRETIME_USER" &> /dev/null; then
+  useradd --no-create-home --home-dir "$WORKING_DIR" "$LIBRETIME_USER"
+fi
+
 info "creating project directories"
 # TODO: Config dir should not be owned by www-data and should be readonly
 mkdir_and_chown "$LIBRETIME_USER" "$CONFIG_DIR"