PHRAS-3644 fix traefik and 4.1.6-rc2 changelog draft (#4000)

* 4.1.6-rc2 changelog

* 4.1.6-rc2 changelog

* PHRAS-3485 fix traefik under Phrasea

* fixe typo

doc/infra/compose/phraseanet_traefik.md

@@ -0,0 +1,44 @@
+# Phraseanet under Traefik
+
+Doc status : Beta
+
+Take a look to Traefik documentation 
+
+https://doc.traefik.io/traefik/providers/docker/
+
+## Traekik Provide by Phrasea Stack
+
+Requirement 
+
+- A phrasea stack up.
+
+https://github.com/alchemy-fr/phrasea
+
+Phraseanet stack and Phrasea Stack need to be in separate subnet
+You need to set several Phraseanet's and Phrasea env var for using the Traefik include in Phrasea Stack.
+
+### Phraseanet side 
+
+- Add `docker-compose.under-phrasea.yml` to `COMPOSE_FILES`
+
+- Add `gateway-traefik` and remove `gateway-classic` from `COMPOSE_PROFILES`
+
+- Set `PHRASEA_DOMAIN` with the name of network set Phrasea side 
+
+- Set `PHRASEANET_TRUSTED_PROXIES`  with the phrasea subnet eg: `PHRASEANET_TRUSTED_PROXIES=172.30.0.0/16`
+
+
+### Phrasea side 
+
+- Set `PHRASEANET_BASE_URL` and `PHRASEANET_APP_OAUTH_TOKEN` in accordance of your Phraseanet's setting
+
+
+
+## Traekik provide by Phraseanet Stack
+
+Not implemented
+
+
+
+
+