implemented compose by url, parse, local yaml.

roles/grafana_renderer/upstream/SOURCE.md

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+# Upstream Snapshot
+
+This directory stores copied upstream reference files for the `grafana_renderer` role.
+
+See `docs/upstream-sources.yml` for repository URLs, refs, README paths, Compose paths, and verification status.
+
+Snapshot files are reference material only. Deployments are generated from this role's `templates/` directory.

roles/grafana_renderer/upstream/docker-compose.yml

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+services:
+  renderer:
+    container_name: grafana-renderer
+    image: grafana/grafana-image-renderer:latest
+    restart: unless-stopped