docker nginx 404 not found - php

Question

Why I get this error when visit localhost:8080!
Any suggestion to solve this issue is welcome because I spend many time for it and I changed PHP docker file and nginx file many times, similar version with laravel framework is ok for me.
*1 open() "/var/www/html/myapp404" failed (2: No such file or directory)
Note that myapp folder contains index.php and other files but it is not a Laravel framework.
My docker compose:
version: '3.8'
services:
nginx:
build:
context: .
dockerfile: nginx.dockerfile
ports:
- 8080:80
depends_on:
- php
- mysql
php:
build:
context: .
dockerfile: php.dockerfile
container_name: php
volumes:
- ${PWD}/myapp:/var/www/html/myapp
working_dir: /var/www/html/myapp
ports:
- "9000:9000"
mysql:
image: yobasystems/alpine-mariadb
ports:
- "3308:3308"
volumes:
- ./mariadb/data:/var/lib/mysql
- ./mariadb/my.conf:/etc/my.cnf
environment:
MYSQL_ROOT_PASSWORD: "111"
MYSQL_DATABASE: myapp
MYSQL_USER: root
MYSQL_PASSWORD: "111"
restart: always
My default.conf => Nginx:
server {
listen 80;
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/myapp;
location / {
try_files $uri $uri/ /index.php?$query_string;
}
# pass the PHP scripts to FastCGI server listening on php:9000
location ~ \.php$ {
try_files $uri = 404;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
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;
}
}
nginx:
FROM nginx:stable-alpine
ADD nginx/default.conf /etc/nginx/conf.d/default.conf
php :
FROM dwchiang/nginx-php-fpm:latest
Thanks.