Don't halt on custom user on restarts

Author: thespad

root/etc/s6-overlay/s6-rc.d/init-adduser/run

@@ -1,7 +1,7 @@
 #!/usr/bin/with-contenv bash
 # shellcheck shell=bash
 
-if [[ -n "$USER_NAME" ]] && [[ "$USER_NAME" != "abc" ]] && grep -q "^${USER_NAME}" /etc/passwd; then
+if [[ ! -f "/usermod" ]] && [[ -n "${USER_NAME}" ]] && [[ "${USER_NAME}" != "abc" ]] && grep -q "^${USER_NAME}" /etc/passwd; then
     echo "*** USER_NAME cannot be set to an user that already exists in /etc/passwd. Halting init. ***"
     sleep infinity
 else
@@ -14,6 +14,7 @@ PGID=${PGID:-911}
 if [[ "$USER_NAME" != "abc" ]]; then
     usermod -l "$USER_NAME" abc
     groupmod -n "$USER_NAME" abc
+    touch /usermod
 fi
 
 groupmod -o -g "$PGID" "$USER_NAME"