install-docker.md

Install docker in Ubuntu.

for the docker documentation for updated info. the instructions below are from https://docs.docker.com/engine/install/ubuntu/

Update the apt package index and install packages to allow apt to use a repository over HTTPS:

sudo apt-get update

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

Add Docker’s official GPG key:

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

Verify that you now have the key with the fingerprint

sudo apt-key fingerprint 0EBFCD88

Use the following command to set up the stable repository. To add the nightly or test repository, add the word nightly or test (or both) after the word stable in the commands below

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

Update the apt package index, and install the latest version of Docker Engine and containerd, or go to the next step to install a specific version:

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

-------------Optional----------------

To install a specific version of Docker Engine, list the available versions in the repo, then select and install:

a. List the versions available in your repo:

apt-cache madison docker-ce

docker-ce | 5:18.09.13-0ubuntu-xenial | https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages docker-ce | 5:18.09.03-0ubuntu-xenial | https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages docker-ce | 18.06.1ce3-0ubuntu | https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages docker-ce | 18.06.0ce3-0ubuntu | https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages ...

b. Install a specific version using the version string from the second column, for example, 5:18.09.13-0ubuntu-xenial.

sudo apt-get install docker-ce=<VERSION_STRING> docker-ce-cli=<VERSION_STRING> containerd.io

---

Verify that Docker Engine is installed correctly by running the hello-world image.

sudo docker run hello-world

dont user root for docker setup**

login to your VM instance

Change the user to sudo

sudo su -

create an user

useradd -d /home/awstechguide -m awstechguide

create password for this user. a non expiry password

passwd awstechguide passwd -x -1 awstechguide

add user to docker group after docker installation**

To create the docker group and add your user:

Create the docker group.

sudo groupadd docker

Add your user to the docker group.

sudo usermod -aG docker ${USER}

You would need to loog out and log back in so that your group membership is re-evaluated or type the following command:

su -s ${USER}

Verify that you can run docker commands without sudo.

docker run hello-world