Added docker compose.

docker-compose.yml

@@ -0,0 +1,17 @@
+version: "3.4"
+
+services:
+  modem-test:
+    container_name: modem-test
+    privileged: true
+    build:
+      context: ./
+      dockerfile: ./Dockerfile
+    network_mode: host
+    volumes:
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro
+    devices:
+      - /dev/i2c-1
+      - /dev/ttyS0
+    restart: unless-stopped