fix: Fixes sensor service test that was flaky and moves docker stuff into it's own directory.

docker/docker-compose.yaml

@@ -0,0 +1,37 @@
+# run this with docker-compose run test
+services:
+  server:
+    image: swift-mqtt-dewpoint:latest
+    restart: unless-stopped
+    env_file: .env
+
+  local:
+    container_name: local-server
+    build:
+      context: .
+      dockerfile: Dockerfile
+    depends_on:
+      - mosquitto
+    environment:
+      - MQTT_HOST=mosquitto
+
+  test:
+    build:
+      context: .
+      dockerfile: Dockerfile.test
+    working_dir: /app
+    depends_on:
+      - mosquitto
+    environment:
+      - MOSQUITTO_SERVER=mosquitto
+    command: /bin/bash -xc "swift test"
+
+  mosquitto:
+    build:
+      context: .
+      dockerfile: Dockerfile.mosquitto
+
+networks:
+  test:
+    driver: bridge
+    external: false