run mqtt_client and mosquitto in docker containers

Author: RaphvK

README.md

@@ -36,6 +36,13 @@ If you would like to install *mqtt_client* from source, simply clone this reposi
 rosdep install -r --ignore-src --from-paths .
 ```
 
+Alternatively, you can directly run the *mqtt_client* and the *mosquitto* MQTT broker in two Docker containers.
+
+```bash
+# mqtt_client/docker$
+docker compose up broker run
+```
+
 ## Usage
 
 The *mqtt_client* can be easily integrated into an existing ROS-based system. Below, you first find a quick start guide to test the *mqtt_client* on a single machine. Then, more details are presented on how to launch and configure it in more complex applications.

docker/docker-compose.yaml

@@ -17,11 +17,16 @@ x-build: &build
 services:
   dev:
     image: *dev-image
+    network_mode: "host"
     build:
       target: dev
       <<: *build
   run:
     image: *run-image
+    network_mode: "host"
     build:
       target: run
       <<: *build
+  broker:
+    network_mode: "host"
+    image: eclipse-mosquitto