01

When the docker is running you can get log output with

make sure you have images running in container then run

docker logs 

to see logs

after running

docker run -d nginx

put whatever version after nginx: from here https://hub.docker.com/_/nginx

docker ps

02

If you don't have the image and you do the run command, it will download the images and run in the background when used with -d detach flag

docker run -d nginx