// Aula 2 - Instalando o Docker

Vamos começar no Ubuntu:

Vamos remover algum tipo de pacote antigo:

sudo apt-get remove docker docker-engine docker.io containerd runc

$ sudo apt-get update

$ sudo apt-get install apt-transport-https ca-certificates curl gnupg-agent software-properties-common

$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

$ sudo apt-key fingerprint 0EBFCD88

Agora, vamos instalar o nosso repositório:

$ sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"

$ sudo apt-get update
$ sudo apt-get install docker-ce docker-ce-cli containerd.io

$ sudo docker run hello-world

Agora, vamos instalar no CentOS:

sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

$ sudo yum install -y yum-utils

$ sudo yum install -y https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.6-3.3.el7.x86_64.rpm

$ yum install docker-ce

$ sudo systemctl start docker

$ sudo docker run hello-world