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Installing from the Ubuntu package repository

$ sudo apt-get update

$ sudo apt-get install -y docker.io

$ sudo ln -sf /usr/bin/docker.io /usr/local/bin/docker

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Installing the latest Docker using docker.io script

$ sudo sh -c "echo deb https://get.docker.io/ubuntu \
docker main > /etc/apt/sources.list.d/docker.list"

$ sudo apt-key adv --keyserver \
hkp://keyserver.ubuntu.com:80 --recv-keys \
36A1D7869245C8950F966E92D8576A8BA88D21E9

$ sudo apt-get update

$ sudo apt-get install -y lxc-docker

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$ sudo curl -sSL https://get.docker.io/ | sh

$ sudo wget -qO- https://get.docker.io/ | sh

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Understanding the Docker setup

$ sudo docker version

$ sudo docker -D info

$ sudo docker pull busybox

$ sudo docker images

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Running the first Docker container

$ sudo docker run busybox echo "Hello World!"

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Troubleshooting

$ sudo service docker status

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