- Update docker-compose.yaml to use ghcr.io/replicatedhq/ttlsh-* images
- Simplify CI auth using GITHUB_TOKEN (no GCP credentials needed)
- Update ansible to use docker login for GHCR instead of gcloud
- Remove google.cloud ansible collection (no longer needed for registry)
GHCR is simpler: automatic auth via GITHUB_TOKEN in Actions,
and packages can be made public for pull access on servers.
Signed-off-by: Marc Campbell <marc.e.campbell@gmail.com>