Add ping binary

Dockerfile

@@ -1,4 +1,5 @@
 FROM python:latest
 WORKDIR /usr/local/bin
 COPY pinger.py .
+RUN apt-get update -y && apt-get install -y iputils-ping
 CMD ["python","-u","pinger.py"]

docker-compose.yaml

@@ -1,7 +1,7 @@
 version: '3.8'
 
 services:
-  meshmqtt:
+  pinger:
     restart: unless-stopped
     build:
       context: .