experimental (#1)

Reviewed-on: https://git.t000-n.de/tbehrendt/ts3gotify/pulls/1

Dockerfile

@@ -0,0 +1,13 @@
+FROM node:18.12-slim
+
+WORKDIR /app
+
+COPY ["package.json", "package-lock.json", "./"]
+
+RUN npm install
+
+COPY . .
+
+RUN npm run build
+
+CMD [ "node", "dist/app.js"]