Use docker-image published by Gitlab in the project cloner

Description

At present, the project cloner uses alpine/git image for cloning projects within a remote dev workspace. Ideally, an image published by gitlab should be used for reliability and security reasons

Acceptance Criteria

• Replace alpine/git with the custom-built image which has git

Design Requirements

• NA

Impact Assessment

• This will only affect workspaces created after this change is deployed