Add docker-compose.dev.yml for easier local building of Docker images

Author: Anze

docker-compose.dev.yml

@@ -0,0 +1,12 @@
+version: '2.1'
+services:
+
+  # Build a local Docker image. Usage:
+  #   $ docker-compose -f docker-compose.dev.yml build
+
+  grafolean-snmp-bot:
+    image: grafolean/grafolean-snmp-bot
+    container_name: grafolean-snmp-bot
+    build:
+      context: .
+      dockerfile: Dockerfile