Create a builder image for Azure DevOps

[jleach]

This builder image runs the Azure DevOps agent to connect to the Azure DevOps control plane for creating and managing builds and deployments. Out of the box, the following build tools are included:

• .Net Core v2.2
• OpenJDK v1.8.0
• node.js v10.13

[jleach]

@cvarjao Hey, I created this image for the health team who are using Azure DevOps. Check out the PR and LMK what you think. Its the same image I demoed at the lest DevOps Commons meetup.

[cvarjao]

Can you please remove the 46.5 MB binary file (cicd/azure-devops-agent/git-2.21.0-bin.tgz) with git? Can't you yum install it?

Example of installing git 2.9 (rh-git29):
https://github.com/BCDevOps/openshift-components/blob/master/cicd/jenkins-basic/docker/Dockerfile#L23

I think 2.18 (rh-git218) is also available from rhel-server-rhscl-7-rpms:
https://www.softwarecollections.org/en/scls/rhscl/rh-git218/

[jleach]

Ok. Normal RPMs were too old to use. I’ll try these.

[jleach]

I've removed the git binary and install it from a RPM package now. I also updated the agent and install .NET from RPM.