Update docker.sh

Author: Matheus Rocha Vieira

programs/docker.sh

@@ -18,8 +18,7 @@ sudo apt-key fingerprint 0EBFCD88
 sudo apt -qq update
 sudo apt -y install docker-ce
 dpkg --get-selections | grep docker
-sudo groupadd docker
+sudo groupadd docker || true
 sudo usermod -aG docker "${USER}" || true
 docker -H localhost:2375 images
 echo "export DOCKER_HOST=\"tcp://0.0.0.0:2375\"" >>"${HOME}"/.bashrc
-bash