how to export DOCKER_HOST=unix://$XDG_RUNTIME_DIR/docker.sock using shell script automatically.

Hi,

I would like to automate these steps to install docker as the rootless user for that I've created shell script.but while doing echo "export DOCKER_HOST=unix://$XDG_RUNTIME_DIR/docker.sock" using shell script it is not working.on manual, it is working fine.

export USERID=$( id |grep uid | awk -F '[ ]' '{print $1}' | awk -F '[(]' '{print $1}'| awk -F '[=]' '{print $2}')
    sudo apt-get install -y uidmap
    curl -fsSL https://get.docker.com/rootless | sh
    echo "DOCKER_HOST=unix:///run/user/${USERID}/docker.sock">>~/.bashrc
    systemctl --user status docker
    systemctl --user start docker

Even though if I export this value to ~/.bashrc, it is not showing in system environment.
Could you please let me know how I can automatically add this value as env on the ubuntu machine.
Thanks
Rohit Thakur.

No repository file or test is named. Start by reproducing the shell script on Ubuntu and compare the environment in the current shell with a newly launched shell after writing ~/.bashrc; done means the rootless Docker client sees the intended DOCKER_HOST automatically.