Dockerization leads to inertiajs routes not working

Hello,

I'm trying to dockerize my laravel, inertiajs, vue setup but I keep getting 404 results in laravel font.

I believe I have narrowed down the issue to inertiajs but what exactly is wrong here I am unsure about, something about how inertiajs serves routes(? a SPA?). I'd appreciate any insight or feedback on what could be wrong.

My stack is laravel, inertiajs, vue3, docker, docker compose, previously pnpm but now I wish to run bun instead, vite, laravel, postgresql.

The containers can ping eachother and networking looks ok, the routes are generated for localhost:8080, the database can be reached over pgadmin, the vite server serves at localhost, the composer installs, migrations run through.

I get no apparent errors in logs except for the constant 404 on localhost:8080 inertia routes, I tried with a test dd route and that renders fine

Route::get('/test', function () {
    return dd('test');
});

// Regular domain routes
Route::domain(config('app.domain'))->group(function () {

    // Standalone routes
    Route::get('/', [HomeController::class, 'welcome'])->name('welcome');
    Route::get('/about', [HomeController::class, 'about'])->name('about');
    Route::get('home', [HomeController::class, 'index'])->name('home');
	...

my nginx config (at the moment I'm only trying to get local development to work, prod comes later):

server {
    listen 80;
    server_name localhost;
    index index.php index.html;
    server_name localhost;
    root /var/www/html/public;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }

    location ~ \.php$ {
        include fastcgi_params;
        fastcgi_pass app:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }

    location ~ /\.ht {
        deny all;
    }
}

the Dockerfile:

FROM php:8.3-fpm-alpine

# Install dependencies
RUN apk add --no-cache postgresql-dev libzip-dev \
    zip \
    unzip \
    curl \
    bash \
    nodejs \
    npm \
    && docker-php-ext-install pdo pdo_pgsql zip

# Install composer
COPY --from=composer/composer:latest-bin /composer /usr/bin/composer

# Copy existing application directory permissions
COPY --chown=www-data:www-data . /var/www/html

WORKDIR /var/www/html

EXPOSE 9000

docker-compose:

services:
  db:
    container_name: db
    image: postgres:15-alpine
    environment:
      LANG: en_GB.UTF-8
      POSTGRES_INITDB_ARGS: "--encoding=UTF8 --locale=en_GB.UTF-8"
    volumes:
      - postgres_data:/var/lib/postgresql/data
    command: postgres -c fsync=off
    networks:
      - default

  pgAdmin:
    container_name: pgAdmin
    image: dpage/pgadmin4
    ports:
      - "5050:80"
    environment:
      PGADMIN_DEFAULT_EMAIL: email
      PGADMIN_DEFAULT_PASSWORD: password
    depends_on:
      - db
    volumes:
      - pgadmin_data:/var/lib/pgadmin
    networks:
      - default

  app:
    container_name: app
    build:
      context: .
      dockerfile: Dockerfile
    image: dhycken/grindvakt:${COMPOSE_PROFILES:-dev}
    volumes:
      - ./:/var/www/html
    environment:
      - APP_ENV=${APP_ENV:-local}
      - DB_HOST=db
    ports:
      - "9000:9000"
    depends_on:
      - db
    networks:
      - default
    profiles: [dev, prod]

  bun:
    container_name: bun
    profiles: [dev]
    image: oven/bun:latest
    command: bun run dev
    working_dir: /var/www/html
    volumes:
      - .:/var/www/html
    networks:
      - default

  nginx-dev:
    profiles: [dev]
    container_name: nginx-dev
    restart: unless-stopped
    image: nginx:alpine
    volumes:
      - ./:/var/www/html
      - ./nginx.dev.conf:/etc/nginx/conf.d/default.conf
    ports:
      - "8080:80"
    depends_on:
      - app
    networks:
      - default

networks:
  default:
    name: app-network

volumes:
  postgres_data:
  pgadmin_data:

docker ps:

NAME        IMAGE                   COMMAND                  SERVICE     CREATED         STATUS         PORTS
app         dhycken/grindvakt:dev   "docker-php-entrypoi…"   app         8 minutes ago   Up 8 minutes   0.0.0.0:9000->9000/tcp
bun         oven/bun:latest         "/usr/local/bin/dock…"   bun         8 minutes ago   Up 8 minutes   
db          postgres:15-alpine      "docker-entrypoint.s…"   db          8 minutes ago   Up 8 minutes   5432/tcp
nginx-dev   nginx:alpine            "/docker-entrypoint.…"   nginx-dev   8 minutes ago   Up 8 minutes   0.0.0.0:8080->80/tcp
pgAdmin     dpage/pgadmin4          "/entrypoint.sh"         pgAdmin     8 minutes ago   Up 8 minutes   443/tcp, 0.0.0.0:5050->80/tcp