Fix docker-in-docker bug for umbrel-dev

docker-compose.override.yml

@@ -11,6 +11,12 @@ services:
         manager:
                 image: getumbrel/manager
                 build: ../umbrel-manager
+                volumes:
+                  # The following is required to correctly mount all services
+                  # inside so they are accessible to docker-compose otherwise
+                  # docker-in-docker fails becuase the compose file references
+                  # build contexts that don't exist inside this container.
+                  - ${PWD}/..:${PWD}/..
         middleware:
                 image: getumbrel/middleware
                 build: ../umbrel-middleware