nroldanf / docker

Docker snippets

docker

Docker Setup and Installation

First you have to verify the requirements for your OS. Docker is only available for Windows PRO, Mac and various linux distributions (Ubuntu, Fedora, etc).

cat /etc/*release*

1. Download docker from repository

Update package index

sudo apt-get update

Install packages to allow apt to use a repo over HTTPS

sudo apt-get install\
    apt-transport-https\
    curl\
    software-properties-common

Add Docker's official GPG key (for identity validation of repo)

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

For x86_64/amd64 processor architecture

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

Reference: Docker Installation Ubuntu

2. Install Docker CE

Install Latest version of Docker CE. Once finished, Docker will be working as a Daemon.

sudo apt-get update
sudo apt-get install docker-ce

Verify the version

sudo docker --version

Give permission to non-super user to use docker. This is a good practice, so we don't have to use sudo every time.

sudo usermod -aG docker nicolas
exit

Docker Setup and Installation with convenience script

You also can use the convenience script to install docker. First line download the shell script and second execute it.

curl -fsSL https://get.docker.com -o get-docker.sh
sudo sh get-docker.sh

Run a simple container to ensure is working as expected. Go to Docker Hub to find a docker Image. A good one is docker/whalesay

docker run docker/whalesay cowsay hola mundo

If docker does not find image locally, it will download it.