Following an example over how to install ansible with python3 in a centos/rhel7 docker image.
FROM registry.access.redhat.com/ubi7/ubi
...
RUN mkdir -p /etc/ansible \
&& echo "localhost-py3 ansible_host=localhost ansible_connection=local ansible_python_interpreter=/usr/bin/python3" > /etc/ansible/hosts \
&& echo '[defaults]' > /etc/ansible/ansible.cfg \
&& echo 'roles_path = /opt/ansible/roles' >> /etc/ansible/ansible.cfg \
&& echo 'library = /usr/share/ansible/openshift' >> /etc/ansible/ansible.cfg
RUN yum clean all && rm -rf /var/cache/yum/* \
&& (yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm || true) \
&& yum install -y python36-devel python36-pip gcc inotify-tools \
&& pip3 install --upgrade setuptools pip \
&& pip install --no-cache-dir --ignore-installed ipaddress \
ansible-runner==1.3.4 \
ansible-runner-http==1.0.0 \
openshift==0.8.9 \
ansible==2.8.5 \
# Ensure directory permissions are properly set
RUN mkdir -p /opt/ansible/.ansible/tmp \
&& chown -R 1001:0 /opt/ansible \
&& chmod -R ug+rwx /opt/ansible
...