docker/l3d#104 Update docs

docs/docker/l3d/changelog.md

-next
-----
-docker/l3d#90 Adjust node_cmd script to work with Traefik 2
+v2.1.7 2021-11-08
+-----------------
+- docker/l3d#104 Delete after leaving l3d if L3D_ALWAYS_CLEANUP is set to 1
+
+v2.1.6 2021-09-20
+-----------------
+- docker/l3d#100 Configure git hook only if git got initialized
+
+v2.1.5 2021-08-30
+-----------------
+- Downgrade glibc from 2.34 to 2.28
+
+v2.1.4 2021-08-26
+-----------------
+- Fix glibc installation Update docker-compose from 1.25.1 to 1.29.2 Update glibc from 2.28 to 2.34
+
+v2.1.3 2021-08-25
+-----------------
+- Properly forward quoted arguments in bash scripts
+- Configure Git hook eralier, before starting the shell Call update-env git hook script through docker to also make it available for IDEs
+
+v2.1.0 2021-04-07
+-----------------
+- bitegra/portal/drupal/projects/portal-default#8 Add git post-checkout hook to write project and branch info to .env file
+- docker/l3d#90 Adjust node_cmd script to work with Traefik 2
 
 v2.0.2 2021-02-03
 -----------------

docs/docker/l3d/index.md

@@ -111,6 +111,10 @@ export L3DSHELL=/bin/bash
 
 Note that only new containers will get affected by this setting.
 
+## Configure automatic cleanup
+
+To manually cleanup L3D projects, you can always call `l3d delete id1 id2 id3 ...` to remove all related containers of the given projects. Should you want to get such cleanup automatically, when a user leaves L3D, then you just have to set an environment variable `L3D_ALWAYS_CLEANUP=1` on your host before you create the first project. This will ask you at the end of any L3D session, if you want to delete all related containers. Answer with `YES`, if you want that to happen.
+
 ## Getting help
 
 Calling `l3d help` displays information about **L3D** and provides a link to further details.