diff --git a/README.md b/README.md
index e1a87fab..314bbf2e 100644
--- a/README.md
+++ b/README.md
@@ -199,7 +199,20 @@ make install # will install to /usr/local on Unix, on macOS it is a good idea to
 
 Headers and a static library will be installed to the target dir.
 
-There is a Dockerfile for running some code on Linux, and a unittest which can be executed by typing `make test`.
+There is a unittest which can be executed by typing `make test`.
+
+There is a Dockerfile for running some code on Linux. To use docker-compose you must make a docker container first.
+
+```
+$ make docker
+...
+$ docker compose up &
+...
+$ docker exec -it ixwebsocket_ws_1 bash
+app@ca2340eb9106:~$ ws --help
+ws is a websocket tool
+...
+```
 
 Finally you can build and install the `ws command line tool` with Homebrew. The homebrew version might be slightly out of date.
 
diff --git a/docker-compose.yml b/docker-compose.yml
index c1c7eb13..574928f0 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -11,6 +11,10 @@ services:
       - redis1
 
   ws:
+    security_opt:
+    - seccomp:unconfined
+    cap_add:
+    - SYS_PTRACE
     stdin_open: true
     tty: true
     image: bsergean/ws:build
diff --git a/makefile b/makefile
index 1f30cf88..afca75ca 100644
--- a/makefile
+++ b/makefile
@@ -31,7 +31,7 @@ docker_push:
 	docker push ${LATEST}
 
 run:
-	docker run --cap-add sys_ptrace -it ws:latest
+	docker run --cap-add sys_ptrace --entrypoint=bash -it bsergean/ws:build
 
 # this is helpful to remove trailing whitespaces
 trail:
diff --git a/ws/ws_cobra_publish.cpp b/ws/ws_cobra_publish.cpp
index e42bbeef..62b4d85f 100644
--- a/ws/ws_cobra_publish.cpp
+++ b/ws/ws_cobra_publish.cpp
@@ -53,10 +53,12 @@ namespace ix
                 {
                     cobraMetricsPublisher.push(channel, data);
                 }
-                cobraMetricsPublisher.suspend();
 
-                std::this_thread::sleep_for(std::chrono::milliseconds(100));
+                cobraMetricsPublisher.suspend();
                 cobraMetricsPublisher.resume();
+
+                // FIXME: investigate why without this check we trigger a lock
+                while (!cobraMetricsPublisher.isAuthenticated()) ;
             }
         }