Jenkins-Docker-Nexus

A tutorial for building a docker image in jenkins and push to nexus artifactory

• note: this tutorial needs a jenkins build agent with docker installed, as the jenkinsfile targeting this type of agent.
  • edit the jenkinsfile agent label to 'any' if you have docker installed on your only agent.

1. Fork this repo.
2. Run the following command to have a running nexus container with extra ports (you only needs the 8081 [UI] and 8082,8083 [docker repo / https]).

docker run -d -p 8081:8081 -p 8082:8082 -p 8083:8083 -p 8084:8084 --name nexus sonatype/nexus3

3. Configure nexus and add a 'docker (hosted)' repo. (see guide below)

https://blog.sonatype.com/using-nexus-3-as-your-repository-part-3-docker-images

4. Create credentials in jenkins to hold a secure 'user:password' for your nexus.
5. Create a declarative pipeline in jenkins and point to the forked repo with the jenkinsfile within it.

https://help.sonatype.com/repomanager3/formats/docker-registry/pushing-images

6. Edit the jenkinsfile to match your repos and credentialsID in lines 12, 32, 67, 69, 72.

7. Commit & push the changes to your forked repo.

8. Run the job and anter it:

   • It will wait and ask you to enter a tag for the docker build.
   • At the end will ask to continue with upload to the nexus artifactory.

9. You can browse your nexus to see the blob data and docker image uploaded to the registry.