5648•11mo ago

Dockerizing in TRPC

Hi guys, I am developing a Next app with TRPC subscriptions/websockets and am running into issues trying to dockerize it. I took a look at the example project at https://github.com/trpc/examples-next-prisma-websockets-starter and saw that the docker-compose only dockerized the database and not the nextjs app. I was wondering if there was a reason for this. My app works fine locally but as soon as I try to run it in a docker container, I get various errors like the websocket connection closing a few seconds into using the app. Here's some excerpts of the errors

app-name | free(): double free detected in tcache 2
postgres                        | 2023-08-04 17:09:15.979 UTC [36] LOG:  could not receive data from client: Connection reset by peer
app-name  | Aborted

app-name  | malloc(): unaligned fastbin chunk detected
postgres                        | 2023-08-04 17:11:24.945 UTC [36] LOG:  could not receive data from client: Connection reset by peer
postgres                        | 2023-08-04 17:11:24.945 UTC [38] LOG:  could not receive data from client: Connection reset by peer
postgres                        | 2023-08-04 17:11:24.945 UTC [37] LOG:  could not receive data from client: Connection reset by peer
app-name  | Aborted
app-name  | [nodemon] app crashed - waiting for file changes before starting...

app-name | free(): double free detected in tcache 2
postgres                        | 2023-08-04 17:09:15.979 UTC [36] LOG:  could not receive data from client: Connection reset by peer
app-name  | Aborted

app-name  | malloc(): unaligned fastbin chunk detected
postgres                        | 2023-08-04 17:11:24.945 UTC [36] LOG:  could not receive data from client: Connection reset by peer
postgres                        | 2023-08-04 17:11:24.945 UTC [38] LOG:  could not receive data from client: Connection reset by peer
postgres                        | 2023-08-04 17:11:24.945 UTC [37] LOG:  could not receive data from client: Connection reset by peer
app-name  | Aborted
app-name  | [nodemon] app crashed - waiting for file changes before starting...

Here is the docker-compose section for the app

version: '3.8'
services:
  app:
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - 3000:3000
    environment:
      - DATABASE_URL=${DATABASE_URL}
    depends_on:
      - db
    restart: always
    volumes:
      - ./:/usr/src/app
      - /usr/src/app/node_modules
      - /usr/src/app/.next
      - /dev/null:/usr/src/.npmrc

version: '3.8'
services:
  app:
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - 3000:3000
    environment:
      - DATABASE_URL=${DATABASE_URL}
    depends_on:
      - db
    restart: always
    volumes:
      - ./:/usr/src/app
      - /usr/src/app/node_modules
      - /usr/src/app/.next
      - /dev/null:/usr/src/.npmrc

If anything else can help, please let me know and I will provide it in the thread. Thank you 🙂

GitHub

GitHub - trpc/examples-next-prisma-websockets-starter: 🏓 tRPC Next....

🏓 tRPC Next.js WebSocket Starter. Contribute to trpc/examples-next-prisma-websockets-starter development by creating an account on GitHub.

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