Docker Container Define user home folder

Question

I have the following php service in docker-compse.yml

version: '3'

networks:
  laravel:
    driver: bridge

services:
  nginx:
    image: nginx:stable-alpine
    restart: unless-stopped
    ports:
      - "${WEB_PORT}:80"
    volumes:
      - "${PROJECT_DIR}:/var/www/html"
      - "${NGINX_CONFIG}:/etc/nginx/conf.d/default.conf"
      - ./docker/nginx/nginx.conf:/etc/nginx/nginx.conf
    depends_on:
      - php
      - mysql
    networks:
      - laravel

  mysql:
    image: mysql:5.7.29
    restart: unless-stopped
    user: "${HOST_UID}:${HOST_GID}"
    tty: true
    ports:
      - "${SQL_PORT}:3306"
    environment:
      MYSQL_DATABASE: ${MYSQL_DATABASE}
      MYSQL_USER: ${MYSQL_USER}
      MYSQL_PASSWORD: ${MYSQL_PASSWORD}
      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
      SERVICE_TAGS: dev
      SERVICE_NAME: mysql
    volumes:
      - ./docker/mysql:/var/lib/mysql
    networks:
      - laravel

  php:
    build:
      context: ./docker
      dockerfile: Dockerfile-php
    user: "${HOST_UID}:${HOST_GID}"
    volumes:
      - "${PROJECT_DIR}:/var/www/html"
      - ./docker/php/php.ini:/usr/local/etc/php/php.ini
      #- "${COMPOSER_CACHE_DIR}:/.composer/cache"
      #- "${COMPOSER_CONFIG}:/.composer/config"
    working_dir: /var/www/html
    networks:
      - laravel

  npm:
    image: node:13.7
    user: "${HOST_UID}:${HOST_GID}"
    volumes:
      - "${PROJECT_DIR}:/var/www/html"
    working_dir: /var/www/html
    entrypoint: ['npm']

When I run whoami in the container, it returns:

whoami: cannot find name for user ID 1000

I think this is a problem because there is no home directory, docker-compose exec php ls ~ returns:

ls: cannot access '/home/clarg': No such file or directory

This then leads to docker-compose exec php php artisan tinker returning:

   ErrorException 

  Writing to directory /.config/psysh is not allowed.

  at vendor/psy/psysh/src/ConfigPaths.php:362
    358▕             @\mkdir($dir, 0700, true);
    359▕         }
    360▕ 
    361▕         if (!\is_dir($dir) || !\is_writable($dir)) {
  ➜ 362▕             \trigger_error(\sprintf('Writing to directory %s is not allowed.', $dir), \E_USER_NOTICE);
    363▕ 
    364▕             return false;
    365▕         }
    366▕ 

      +20 vendor frames 
  21  artisan:37
      Illuminate\Foundation\Console\Kernel::handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))

From googling, I see this is in the home directory, which does not exist in the container.

How can I solve this?

EDIT:

Dockerfile-php:

FROM php:8.0-fpm

ADD https://github.com/mlocati/docker-php-extension-installer/releases/latest/download/install-php-extensions /usr/local/bin/

RUN chmod +x /usr/local/bin/install-php-extensions && \
    install-php-extensions gd zip pdo_mysql

# check https://github.com/mlocati/docker-php-extension-installer#supported-php-extensions for more extensions

COPY --from=composer /usr/bin/composer /usr/bin/composer

php.ini https://pastebin.com/T2iYTZz2