* Updating dockerhub reference and connector ref in devcontainer.
* Adding commit sha to devcontainer dockerfile for docker layer cache invalidation.
* Updating .devcontainer/Dockerfile to use secrets for scm credentials.
* feat: [CDE-1009]: Changing devcontainer image tag.
* feat: [CDE-1009]: Adding dockerfile and devcontainer for gitness.
* feat: [CDE-1009]: Adding dockerfile and devcontainer for gitness.
