What about now?

.dockerignore

@@ -1 +1,3 @@
 node_modules/
+.drone.yml
+stuff.db

Dockerfile

@@ -1,10 +1,17 @@
 FROM node:8.17
 
+# Install Bluetooth software
+RUN apt-get update
+RUN apt-get install -y bluez bluetooth
+
+# Fetch data from repo
 COPY . /app
 WORKDIR /app
 
+# Install Node dependencies
 RUN npm install
 
+# Use this volume for SQLite database
 VOLUME ["/var/sqlite"]
 
-CMD node /app/src/server.js
+ENTRYPOINT bash docker-entrypoint.sh

docker-entrypoint.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+service dbus start
+bluetoothd &
+
+node /app/src/server.js