@ravola can you please add more details.
Why do you need the apt-get command?
It's prepared virtual machines for just playing with Docker.
In my opinion, you shouldn't expect more.

@andrzejsydor
What i meant was, if i am inside the container (docker exec) i should be able to run apt-get in the container for Ubuntu image.

@ravola I just checked by simple commands and it works:

docker run -it ubuntu sh
apt-get update

@andrzejsydor apt-get work when i add a docker compose but doesn't work when i docker exec. Maybe a configuration issue on my end.

@ravola probably. Can you attach the source code for detailed investigation or just the issue should be closed?