Docker Laravel – could not be opened in append mode: failed to open stream: Permission denied – Nginx

Have been trying to fix this error for almost an entire day now and have no idea what is possibly causing this issue.

The error I get is: UnexpectedValueException
The stream or file "/var/www/storage/logs/laravel.log" could not be opened in append mode: failed to open stream: Permission denied

Below are my docker-compose.yml, Dockerfile and conf.d files.

docker-compose.yml:

version: "3"
services:
  app:
    build:
      context: .
      dockerfile: Dockerfile
    image: /laravelproject
    container_name: app
    restart: unless-stopped
    volumes:
      - ./:/var/www
      - ./config/php/local.ini:/usr/local/etc/php/conf.d/local.ini

  webserver:
    build:
      context: .
      dockerfile: Dockerfile_Nginx
    image: /nginx
    container_name: webserver
    restart: unless-stopped
    ports:
      - "8080:80"
    volumes:
      - ./:/var/www
      - ./config/nginx/conf.d/:/etc/nginx/conf.d/
    depends_on:
      - app

Dockerfile:

FROM php:7.3-fpm-alpine

WORKDIR /var/www

RUN apk update && apk add 
    build-base 
    freetype-dev 
    libjpeg-turbo-dev 
    libpng-dev 
    libzip-dev 
    zip 
    jpegoptim optipng pngquant gifsicle 
    vim 
    unzip 
    git 
    curl

RUN docker-php-ext-install pdo_mysql mbstring zip exif pcntl
RUN docker-php-ext-configure gd --with-gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ --with-png-dir=/usr/include/
RUN docker-php-ext-install gd

# copy config
COPY ./config/php/local.ini /usr/local/etc/php/conf.d/local.ini

RUN addgroup -g 1000 -S www && 
    adduser -u 1000 -S www -G www

USER www

COPY --chown=www-data:www-data . /var/www

EXPOSE 9000

app.conf:

server{
    listen 80;
    index index.php index.html;
    error_log  /var/log/nginx/error.log;
    access_log /var/log/nginx/access.log;
    root /var/www/public;
    location ~ .php$ {
        try_files $uri =404;
        fastcgi_split_path_info ^(.+.php)(/.+)$;
        fastcgi_pass app:9000;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param PATH_INFO $fastcgi_path_info;
    }
    location / {
        try_files $uri $uri/ /index.php?$query_string;
        gzip_static on;
    }
}

I have tried many solutions but none of them have worked.

Thanks.