Setup Nexus on EC2 instance:

Step-1: Install Docker

sudo apt update
sudo apt install docker.io

Step-2: Pull the nexus image from Docker:

sudo docker pull sonatype/nexus3

Step-3: Run the Nexus Container

sudo docker run -d -p 8081:8081 -p 8083:8083 --name nexus sonatype/nexus3

Step 4: Add insecure registry :

#Login as root user
sudo su 

cd /etc/docker

#If not present then create a new file daemon.json
vi daemon.json
#and add:
{ "insecure-registries":["nexus_machine_ip:8083"] }

Once that's done we need to execute systemctl restart docker this is to apply new changes, also we can verify whether the registry is added or not by executing docker info

Step-5: Access UI of Nexus:

http://<EC2-instance-public-IP>:8081

Step-6: Get Password:

Exec inside Docker container

docker exec -it nexus /bin/bash

#And cat the above directory mentioned to get the password.

Step-7: Create a docker hosted repo:

Step-8: Through CLI login into your docker hosted repo:

docker login -u nexus_username -p nexus_pass nexus_ip:8083

Step-9: Let's try to push the image to our Docker hosted repo on Nexus:

#Pull any image from docker hub
docker pull nginx

#Change the tag of image:
docker tag <imageName> nexus_ip:8083/repository/<Docker_Hosted_repo_name>/<repo_name>

#Example:
docker tag nginx 13.234.110.26:8083/repository/repo/nginx

Push the image:

docker push 13.234.110.26:8083/repository/repo/nginx

HURRRAAAYYY!!!!!!!!!!!!!!!!😍

Hope this blog helped you in setting up the private repository.

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