refactor(api): rename api composer/django/ dir to docker/

Part-of: <https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2302>

api/Dockerfile

@@ -112,4 +112,4 @@ RUN set -eux; \
 ENV CACHE_URL="redis://redis:6379/0"
 ENV CELERY_BROKER_URL="redis://redis:6379/0"
 
-CMD ["./compose/django/server.sh"]
+CMD ["./docker/server.sh"]

changes/changelog.d/rename-api-compose-dir.misc

@@ -0,0 +1 @@
+Rename api composer/django/ dir to docker/