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Containerfile
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Containerfile
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# Base image:
FROM docker.io/library/rockylinux:8.7
# Environmental variables:
ENV pip_packages "ansible"
# Install systemd:
# * See https://hub.docker.com/_/centos/
RUN 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/*;
# Package installs/updates:
RUN dnf -y install rpm dnf-plugins-core && \
dnf -y update && \
dnf -y config-manager --set-enabled powertools && \
dnf -y install \
epel-release \
hostname \
initscripts \
libyaml-devel \
python3 \
python3-pip \
python3-pyyaml \
sudo \
which && \
dnf clean all
# Upgrade pip to latest version:
RUN pip3 install --upgrade pip
# Install Python packages:
RUN pip3 install $pip_packages
# 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
# Specify volumes:
VOLUME [ "/sys/fs/cgroup" ]
# Run once the container has started:
CMD [ "/usr/lib/systemd/systemd" ]