mosquitto: make MQTT sharable across docker images

Author: gorenje

Makefile

@@ -5,7 +5,8 @@ build-docker-container:
 	docker build -f dockerfiles/Dockerfile.dev -t erlang-shell .
 
 start-docker-shell: build-docker-container
-	docker run -it -v $(shell pwd):/code -v $(shell pwd)/data:/data --hostname erlang-red -p 9090:8080 -w /code --rm erlang-shell bash
+	docker network create erlang-red-node-red-bridge || true
+	docker run -it -v $(shell pwd):/code -v $(shell pwd)/data:/data --hostname erlang-red -p 9090:8080 -p 1883:1883 --network erlang-red-node-red-bridge -w /code --rm erlang-shell bash
 
 start-docker-shell-raspberry: build-docker-container
 	docker run -it -v $(shell pwd):/code -v $(shell pwd)/data:/data --device=/dev/i2c-1 --hostname erlang-red-raspberry --publish 9090:8080 -w /code --rm erlang-shell bash

dockerfiles/Dockerfile.dev

@@ -20,6 +20,8 @@ RUN apt-get update && apt-get -y install \
     net-tools \
     i2c-tools
 
+COPY ./priv/mosquitto.conf /etc/mosquitto/
+
 # create a user for docker image since erlexec complains too much
 # but give the user super-powers - erlang and the power of root
 RUN useradd -s /bin/bash -m -G users -G sudo erlang

priv/mosquitto.conf

@@ -0,0 +1,2 @@
+listener 1883 0.0.0.0
+allow_anonymous true