Docker Hub (Docker/containers) setup

Install docker on Jenkins machine

1. Installation using script

sudo wget https://raw.githubusercontent.com/lerndevops/labs/master/scripts/installDocker.sh -P /tmp
sudo chmod 755 /tmp/installDocker.sh
sudo bash /tmp/installDocker.sh

2. Manual installation steps

sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl gnupg software-properties-common lsb-release

Add dockers official GPG key and stable repo

sudo mkdir -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

Install docker latest

sudo apt-get update ; clear
sudo apt-get install -y docker-ce docker-ce-cli http://containerd.io  docker-compose-plugin

Test the installation by running a simple container

docker run hello-world

  • Check available versions for installation

apt-cache madison docker-ce | awk '{print $3}'

Docker integration with Jenkins

sudo usermod -aG docker jenkins

Dockerfile

  • In the source code repository, create a docker file to create a docker image for every service respectively.

Docker file

1. Commands to build docker file

  • While configuring the Jenkins build, the required commands to build the docker image is given in the execute shell of Build Steps section.

Docker file build commands

Dockerhub login

  • Login to dockerhub using Docker Hub login portal.

  • Select the required repository from the list to access the docker image.

  • A list of docker images with their versions can be found under Tags section which are integrated in the container apps.

Docker Hub