:~# apt-cache policy containerd docker.io
containerd:
	Installed:	1.5.9-0ubuntu1~18.04.2
	Candidate:	1.5.9-0ubuntu1~18.04.2
	Version table:
	*** 1.5.9-0ubuntu1~18.04.2 500
			500	http://br.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages
			500	http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages
			100	/var/lib/dpkg/status
		0.2.5-0ubuntu2 500
			500	http://br.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
docker.io:
	Installed:	18.09.7-0ubuntu1~16.04.7
	Candidate:	20.10.12-0ubuntu1~18.04.1
	Version table:
		20.10.12-0ubuntu2~18.04.1 500
			500	http://br.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages
		20.10.7-0ubuntu5~18.04.3 500
			500	http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages
	*** 18.09.7-0ubuntu1~16.04.7 100
			100	/var/lib/dpkg/status
		17.12.1-0ubuntu1 100
			500	http://br.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages