Add docker compose support

debug_toolbar/middleware.py

@@ -54,13 +54,15 @@ def show_toolbar_with_docker(request: HttpRequest) -> bool:
 
     # Test: Docker
     try:
+        host = getattr(settings, "DEBUG_TOOLBAR_CONFIG", {}).get(
+            "DOCKER_COMPOSE_SERVICE", "host.docker.internal"
+        )
         # This is a hack for docker installations. It attempts to look
         # up the IP address of the docker host.
         # This is not guaranteed to work.
         docker_ip = (
             # Convert the last segment of the IP address to be .1
-            ".".join(socket.gethostbyname("host.docker.internal").rsplit(".")[:-1])
-            + ".1"
+            ".".join(socket.gethostbyname(host).rsplit(".")[:-1]) + ".1"
         )
         if request.META.get("REMOTE_ADDR") == docker_ip:
             return True

docs/configuration.rst

@@ -67,6 +67,13 @@ Toolbar options
   This setting is a set of the full Python paths to each panel that you
   want disabled (but still displayed) by default.
 
+* ``DOCKER_COMPOSE_SERVICE``
+
+  Default: ``None``
+
+  If you use docker compose, besides the ``show_toolbar_with_docker`` you also
+  need to configure this setting to tell the name of the docker compose service.
+
 * ``INSERT_BEFORE``
 
   Default: ``'</body>'``