useradd not in amazonlinux base image

It seems that useradd is not in amazonlinux docker base image.

useradd will work when when my Dockerfile install openldap-devel, so RUN useradd my_user will work when I my image have the following:

FROM amazonlinux

RUN yum -y install python3 \
    gcc \
    python3-pip \
    python3-devel \
    openldap-devel

When my image is just build from

FROM amazonlinux

RUN yum -y install python3 \
    gcc \
    python3-pip \
    python3-devel

The command RUN useradd my_user fails with the error message /bin/sh: useradd: command not found

How do I install useradd in an amazonlinux base image without having to install all openldap-devel

Solution

I managed to figure out what package useradd belongs by running the following command on an AmazonLinux EC2 machine:

$ yum whatprovides /usr/sbin/useradd

2:shadow-utils-4.1.5.1-24.amzn2.x86_64 : Utilities for managing accounts and shadow password files
Repo        : amzn2-core
Matched from:
Filename    : /usr/sbin/useradd

So changing my Dockerfile to the following made it work:

FROM amazonlinux

RUN yum -y install python3 \
    python3-pip \
    shadow-utils