Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg. podman version 2.0.5

hi,
I am getting error while docker -v command. what’s the solution? due to this error i found unable to run docker-compose file.

ERROR: Couldn’t connect to Docker daemon at http+docker://localhost - is it running?

If it’s at a non-standard location, specify the URL with the DOCKER_HOST environment variable.

Please help me to resolve this issue…Application running on AWS

thanks
ph