Several variants of the container

THIRD_PARTY_NOTICES.md

@@ -1,14 +1,23 @@
 # Third-party notices
 
 peo's own code (the `peo/`, `container/` and `tests/` directories, the
-`Containerfile` and `pyproject.toml`) is licensed under the GNU General Public
+`Containerfile`, `compose.yaml` and `pyproject.toml`) is licensed under the GNU General Public
 License v3.0 or later; see [LICENSE](LICENSE).
 
-The container image built from this repository also contains the third-party
+The container images built from this repository also contain the third-party
 software below. None of it is stored in this repository: it is downloaded when
-the image is built. Inside the image, license texts are collected under
+an image is built. Inside the images, license texts are collected under
 `/usr/share/doc/peo/`.
 
+The full image (the default build target) contains everything in the table. The
+slim image (`--target slim`) contains only neo4j-browser and the JavaScript
+libraries bundled into it, the Debian base system with Python 3 and
+`python3-psycopg`, and the Python packages peo depends on.
+
+`compose.yaml` does not bundle PostgreSQL, AGE or pgAdmin: it runs the
+`apache/age` and `dpage/pgadmin4` images from Docker Hub, which come with their
+own license information.
+
 | Component | License | Copyright | License text in the image |
 | --- | --- | --- | --- |
 | [neo4j-browser](https://github.com/neo4j/neo4j-browser), built unmodified from the commit pinned in the `Containerfile` | GPL-3.0-or-later | Neo4j Sweden AB | `/usr/share/doc/peo/neo4j-browser/` (`LICENSE`, `NOTICE.txt`) |