diff --git a/README.md b/README.md
index 41bb226..f129907 100644
--- a/README.md
+++ b/README.md
@@ -18,13 +18,14 @@ This is an automated build linked with the [debian](https://hub.docker.com/_/deb
 
 # Usage
 
-- Required: define users in command arguments or in file mounted as `/etc/sftp/users.conf`
-  (syntax: `user:pass[:e][:uid[:gid[:dir1[,dir2]...]]]...`).
+- Define users in (1) command arguments, (2) `SFTP_USERS` environment variable
+  or (3) in file mounted as `/etc/sftp/users.conf` (syntax:
+  `user:pass[:e][:uid[:gid[:dir1[,dir2]...]]] ...`, see below for examples)
   - Set UID/GID manually for your users if you want them to make changes to
     your mounted volumes with permissions matching your host filesystem.
-  - Add directory names at the end, if you want to create them under the user's
-    home directory. Perfect when you just want a fast way to upload something.
-- Optional (but recommended): mount volumes.
+  - Directory names at the end will be created under user's home directory with
+    write permission, if they aren't already present.
+- Mount volumes
   - The users are chrooted to their home directory, so you can mount the
     volumes in separate directories inside the user's home directory
     (/home/user/**mounted-directory**) or just mount the whole **/home** directory.
diff --git a/entrypoint b/entrypoint
index 62b58df..bff3652 100755
--- a/entrypoint
+++ b/entrypoint
@@ -37,27 +37,28 @@ function createUser() {
     log "Parsing user data: \"$@\""
 
     IFS=':' read -a args <<< $@
-    index=0
+
+    skipIndex=0
+    chpasswdOptions=""
+    useraddOptions="--no-user-group"
 
     user="${args[0]}"; validateArg "username" "$user" "$reUser" || return 1
     pass="${args[1]}"; validateArg "password" "$pass" "$rePass" || return 1
 
     if [ "${args[2]}" == "e" ]; then
         chpasswdOptions="-e"
-        index=1
+        skipIndex=1
     fi
 
-    uid="${args[$[$index+2]]}"; validateArg "UID" "$uid" "$reUid" || return 1
-    gid="${args[$[$index+3]]}"; validateArg "GID" "$gid" "$reGid" || return 1
-    dir="${args[$[$index+4]]}"; validateArg "dirs" "$dir" "$reDir" || return 1
+    uid="${args[$[$skipIndex+2]]}"; validateArg "UID" "$uid" "$reUid" || return 1
+    gid="${args[$[$skipIndex+3]]}"; validateArg "GID" "$gid" "$reGid" || return 1
+    dir="${args[$[$skipIndex+4]]}"; validateArg "dirs" "$dir" "$reDir" || return 1
 
     if getent passwd $user > /dev/null; then
         log "WARNING: User \"$user\" already exists. Skipping."
         return 0
     fi
 
-    useraddOptions="--no-user-group"
-
     if [ -n "$uid" ]; then
         useraddOptions="$useraddOptions --non-unique --uid $uid"
     fi
@@ -130,18 +131,17 @@ if [ ! -f "$userConfFinalPath" ]; then
         cat "$userConfPath" | grep -v -E "$reArgSkip" > "$userConfFinalPath"
     fi
 
-    # Append users from STDIN to final config
-    # DEPRECATED on 2017-10-08, DO NOT USE
-    # TODO: Remove code after 6-12 months
-    if [ ! -t 0 ]; then
-        while IFS= read -r user || [[ -n "$user" ]]; do
+    if $startSshd; then
+        # Append users from arguments to final config
+        for user in "$@"; do
             echo "$user" >> "$userConfFinalPath"
         done
     fi
 
-    if $startSshd; then
-        # Append users from arguments to final config
-        for user in "$@"; do
+    if [ -n "$SFTP_USERS" ]; then
+        # Append users from environment variable to final config
+        usersFromEnv=($SFTP_USERS) # as array
+        for user in "${usersFromEnv[@]}"; do
             echo "$user" >> "$userConfFinalPath"
         done
     fi
@@ -172,6 +172,8 @@ if [ -d /etc/sftp.d ]; then
         if [ -x "$f" ]; then
             log "Running $f ..."
             $f
+        else
+            log "Could not run $f, because it's missing execute permission (+x)."
         fi
     done
     unset f
diff --git a/tests/run b/tests/run
index 0453473..ddc2978 100755
--- a/tests/run
+++ b/tests/run
@@ -52,10 +52,12 @@ function beforeTest() {
     $sudo docker run \
         -v "$tmpDir/users:/etc/sftp/users.conf:ro" \
         -v "$scriptDir/id_rsa.pub":/home/test/.ssh/keys/id_rsa.pub:ro \
+        -v "$scriptDir/id_rsa.pub":/home/userFromEnv/.ssh/keys/id_rsa.pub:ro \
         -v "$scriptDir/id_rsa.pub":/home/user.with.dot/.ssh/keys/id_rsa.pub:ro \
         -v "$tmpDir":/home/test/share \
         --name "$sftpContainerName" \
         --expose 22 \
+        -e "SFTP_USERS=userFromEnv::$(id -u):$(id -g) userFromEnv2::$(id -u):$(id -g)" \
         -d "$sftpImageName" \
         > "$redirect"
 
@@ -145,6 +147,13 @@ function testUserWithDotLogin() {
     assertReturn $? 0
 }
 
+function testLoginUsingUserFromEnv() {
+    $skipAllTests && skip && return 0
+
+    runSftpCommands "$sftpContainerName" "userFromEnv" "exit"
+    assertReturn $? 0
+}
+
 function testWritePermission() {
     $skipAllTests && skip && return 0