Dockerfile

FROM almalinux:latest

LABEL maintainer="Mark A Olson"

ENV container=docker

RUN cd /lib/systemd/system/sysinit.target.wants/ ; \
    for i in * ; do [ $i = systemd-tmpfiles-setup.service ] || rm -f $i ; done ; \
    rm -f /lib/systemd/system/multi-user.target.wants/* ; \
    rm -f /etc/systemd/system/*.wants/* ; \
    rm -f /lib/systemd/system/local-fs.target.wants/* ; \
    rm -f /lib/systemd/system/sockets.target.wants/*udev* ; \
    rm -f /lib/systemd/system/sockets.target.wants/*initctl* ; \
    rm -f /lib/systemd/system/basic.target.wants/* ; \
    rm -f /lib/systemd/system/anaconda.target.wants/*

# Install requirements.
RUN dnf -y install rpm almalinux-release dnf-plugins-core \
 && dnf -y update \
 && dnf -y config-manager --set-enabled powertools \
 && dnf -y install \
      sudo \
      which \
      libyaml-devel \
      python39 \
      python3-pip \
      python3-pyyaml \
 && dnf clean all

# Upgrade pip to latest version.
RUN pip3 install --upgrade pip

# Install Ansible via Pip.
RUN pip3 install ansible

# Disable requiretty.
RUN sed -i -e 's/^\(Defaults\s*requiretty\)/#--- \1/'  /etc/sudoers

# Install Ansible inventory file.
RUN mkdir -p /etc/ansible
RUN echo -e '[local]\nlocalhost ansible_connection=local' > /etc/ansible/hosts

VOLUME ["/sys/fs/cgroup"]
CMD ["/usr/lib/systemd/systemd"]