docker-compose config for unraid

I want to host a little go backend program on my unraid server so I can receive HTTP requests from my contact form on my website and forward them using a Telegram bot.

But I have trouble getting the docker-compose configuration right.
My unraid server's IP Is 10.14.12.111 and I want the docker image to be on 10.14.12.85 on the "br0" network 

services:
  app:
    build: .
    ports:
      - "8080:8080"
    environment:
      - TELEGRAM_BOT_TOKEN=my_telegram_bot_token
      - TELEGRAM_CHAT_ID=my_chat_id
      - SERVER_HOST=10.14.12.85

I've also tried to set the network to "br0" in the compose file with no success.

Quote

2024/06/05 14:59:20 listen tcp 10.14.12.185:8080: bind: cannot assign requested address

My Dockerfile:

FROM golang:1.22-alpine

WORKDIR /app

COPY go.mod go.sum ./
RUN go mod download

COPY . .

RUN go build -o main .

ENV TELEGRAM_BOT_TOKEN=my_telegram_bot_token
ENV TELEGRAM_CHAT_ID=my_chat_id
ENV SERVER_HOST=10.14.12.85

CMD ["./main"]

I'm using the Docker Compose Manager plugin by the way if this is relevant.