From 0fba0da794b27894e01d8eb49e6113f274b1ce88 Mon Sep 17 00:00:00 2001
From: Adrian Dvergsdal <github.com@konto.atmoz.no>
Date: Fri, 13 Oct 2017 23:31:17 +0200
Subject: [PATCH 1/2] Use getent to check the existence of user/group

---
 entrypoint | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/entrypoint b/entrypoint
index d3a528f..03eb959 100755
--- a/entrypoint
+++ b/entrypoint
@@ -51,7 +51,7 @@ function createUser() {
     gid="${args[$[$index+3]]}"; validateArg "GID" "$gid" "$reGid" || return 1
     dir="${args[$[$index+4]]}"; validateArg "dirs" "$dir" "$reDir" || return 1
 
-    if $(cat /etc/passwd | cut -d: -f1 | grep -q "^$user:"); then
+    if getent passwd $user > /dev/null; then
         log "WARNING: User \"$user\" already exists. Skipping."
         return 0
     fi
@@ -63,7 +63,7 @@ function createUser() {
     fi
 
     if [ -n "$gid" ]; then
-        if ! $(cat /etc/group | cut -d: -f3 | grep -q "$gid"); then
+        if ! getent group $gid > /dev/null; then
             groupadd --gid $gid "group_$gid"
         fi
 

From f3212b3377d20f9bf81e989d4bec8f6dffa479fb Mon Sep 17 00:00:00 2001
From: Adrian Dvergsdal <github.com@konto.atmoz.no>
Date: Fri, 13 Oct 2017 23:39:04 +0200
Subject: [PATCH 2/2] Consistent syntax for subshell

---
 entrypoint | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/entrypoint b/entrypoint
index 03eb959..e5f2601 100755
--- a/entrypoint
+++ b/entrypoint
@@ -77,7 +77,7 @@ function createUser() {
 
     # Retrieving user id to use it in chown commands instead of the user name
     # to avoid problems on alpine when the user name contains a '.'
-    uid=`id $user -u`
+    uid="$(id -u $user)"
 
     if [ -n "$pass" ]; then
         echo "$user:$pass" | chpasswd $chpasswdOptions