Hi guys, I'm working on a small project for Uni and am using docker & docker-compose for the first time.
My application is written in TypeScript (Node) and is using Postgres as DB.

No matter how much I tried, my docker-compose is always failing to build correctly...
I would really appreciate it if you could land me a hand here 🙏

__This is my Dockerfile:__
```
FROM node:8.3.0
WORKDIR /usr/app
COPY . .
RUN node install
EXPOSE 80:80
CMD ["node", "start"]
```
__npm scripts:__
```
"scripts": {
    "postinstall": "tsc",
    "start": "node ./bin/Server.js"
  }
```
How should I write down my `docker-compose.yml` to make it work?