1. Tag Release on GitHub for dspace and dspace-angularProvide a good tag name for the release.

2. Build Docker Images
The images could be built and pushed from the command line.

cd <DSPACE-SRC>
--checkout tag--
docker build -t dspace/dspace:<tag> -f Dockerfile.jdk8-test .
docker push dspace/dspace:<tag>

cd <ANGULAR-SRC>
--checkout tag--
docker build -t dspace/dspace-angular:<tag> .
docker push dspace/dspace-angular:<tag>

Or, the build could be configured on the automated build screen.
Use the same tag name for the Docker image.

3. Modify the d7.preview.yml to use the new image names

• https://github.com/DSpace-Labs/DSpace-Docker-Images/blob/master/docker-compose-files/dspace-compose/d7.preview.yml#L10-L14