Friday, February 21, 2020

How to upload Docker images into Nexus docker Registry | How to Upload Docker images to Nexus Decker Registry

How to upload Docker images into Nexus docker Registry - Upload Docker images to Nexus Decker Registry.


Docker is installed and up and running.
Nexus is up and running and Docker registry is already configured. If you have not configured yet, click here to setup Nexus 3 to configure as Docker Registry.

Steps to configure in Docker to upload Docker images to Nexus
login to EC2 instance where you have installed Docker, try to perform below commands:
Configure Docker service to use insecure registry with http. Create Docker daemon file if it does not exist.

sudo vi /etc/docker/daemon.json
Add entries like below:
Enter Nexus URL along with port number used for Docker registry.

    "insecure-registries" : ["nexus_public_dns_name:8085"]

Restart Docker daemon after above configuration changes.

sudo systemctl restart docker

sudo systemctl status docker
Make sure Docker was able to restart successfully. Press q to come out of above window.

Login to Docker Registry hosted in Nexus 3

Make sure you are able to login to Docker Registry hosted in Nexus by executing below command:
sudo docker login -u admin nexus_public_dns_name:8085

Now enter the Nexus admin password(it will not show the password when you type which is ok)

Download Dockerized code

git clone; cd mydockerrepo/pythonApp

Create a Docker image and tag the image per Nexus Registry

sudo docker build . -t nexus_public_dns_name:8085/mypythonapp

Push the image into Docker Registry
sudo docker push nexus_public_dns_name:8085/mypythonapp

Verify if Docker image is uploaded into Nexus successfully
Login to Nexus, click on Browse, choose Docker registry

Please watch in YouTube channel for the demo:

1 comment:

  1. Hello Coach, i had issues with this command sudo docker login -u admin -p admin123 nexus_public_dns_name:8085. I keep getting this response "WARNING! Using --password via the CLI is insecure. Use --password-stdin.
    Error response from daemon: Get net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers). please advise!!!