Adding not root user to Docker container

 in docker file:

ARG USERNAME=containeruser

ARG USER_UID=1000

ARG USER_GID=$USER_UID

RUN groupadd --gid $USER_GID $USERNAME \

    && useradd --uid $USER_UID --gid $USER_GID -m $USERNAME \

    && chown -R $USER_UID:$USER_GID /home/$USERNAME

    # [Optional] Add sudo support if needed

    # && apt-get update && apt-get install -y sudo \

    # && echo $USERNAME ALL=(root) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME \

    # && chmod 0440 /etc/sudoers.d/$USERNAME

# Set the default user for all processes in the container (optional, but ensures everything runs as this user)

# USER $USERNAME