ubuntu image with non-root user

Dockerfile

FROM ubuntu:latest

RUN apt -y update && \
    apt -y full-upgrade && \
    apt -y autoremove && \
    apt -y install sudo zsh git curl

RUN useradd -U -m john && \
    usermod -aG sudo -s /bin/zsh john && \
    echo "john ALL=(root) NOPASSWD:ALL" > /etc/sudoers.d/john && \
    chmod 0440 /etc/sudoers.d/john && \
    echo "Set disable_coredump false" >> /etc/sudo.conf && \
    touch /home/john/.zshrc && \
    chown john:john /home/john/.zshrc

USER john
WORKDIR /home/john