使用docker将phpMyAdmin添加到我的LEMP堆栈时出现问题

Question

我正在尝试使用docker将phpMyAdmin添加到我的LEMP堆栈中，但我无法使其正常工作，

我在另一个容器中使用nginx-proxy，这就是为什么我指定VIRTUAL_HOST并仅公开端口80 并且主页可以正常工作。

我仅收到“找不到文件”错误，并且我已经用多种不同的配置进行了测试，但是没有任何效果，而且我对NGINX的配置也不是很好。

这是我的docker-compose.yml：

version: '3'
services:
php:
    build:
        context: ./docker
        dockerfile: php.Dockerfile
    container_name: ${APP_NAME}-php
    networks:
        - backend
    volumes:
        - './app:/var/www/html'
        - 'phpmyadmin_data:/var/www/html/phpmyadmin:ro'
    depends_on:
        - mariadb

nginx:
    image: nginx:latest
    container_name: ${APP_NAME}-nginx
    networks:
        - frontend
        - backend
    expose:
        - 80
        - 443
    environment:
        VIRTUAL_HOST: ${VIRTUAL_HOST}
    links:
        - 'php'
        - 'phpmyadmin'
    volumes:
        - './app:/var/www/html:ro'
        - 'phpmyadmin_data:/var/www/html/phpmyadmin:ro'
        - './config/nginx:/etc/nginx/conf.d:ro'
    depends_on:
        - php

mariadb:
    image: mariadb:10.3.9
    container_name: ${APP_NAME}-mariadb
    restart: 'on-failure'
    networks:
        - backend
    environment:
        MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
    volumes:
        - ${PWD}
phpmyadmin:
    image: phpmyadmin/phpmyadmin:fpm-alpine
    container_name: ${APP_NAME}-phpmyadmin
    networks:
        - backend
    volumes:
        - 'phpmyadmin_data:/var/www/html'
    environment:
        PMA_HOST: mariadb
    depends_on:
        - mariadb

 volumes:
     phpmyadmin_data:

 networks:
     frontend:
         external:
             name: 'frontend'
     backend: {}

这是我的nginx.conf：

server {
index index.php index.html;
server_name localhost;
error_log  /var/log/nginx/error.log;
access_log /var/log/nginx/access.log;
root /var/www/html;

location / {
    try_files $uri $uri/ /index.php$is_args$query_string;
    fastcgi_split_path_info ^(.+\.php)(/.+)$;
    fastcgi_pass php: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 /phpmyadmin {
    fastcgi_pass phpmyadmin:9000;
    fastcgi_index index.php;
    fastcgi_split_path_info ^(.+\.php)(/.*)$;
    include fastcgi_params;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    fastcgi_param PATH_INFO $fastcgi_path_info;
}
}