MySQLi not found in docker php container - php

Question

Error:
Fatal error: Uncaught Error: Class 'mysqli' not found in /var/www/html/index.php:16 Stack trace: #0 {main} thrown in /var/www/html/index.php on line 16
I made the index.php file and PDO mysql connection example code. Everything working as expected, except MySQLi connection. I added docker-php-ext-install run command to docker file but that did not help.
Here is my PHP docker file:
FROM php:7.0-fpm
RUN docker-php-ext-install pdo pdo_mysql mysqli
RUN docker-php-ext-enable mysqli
My docker-compose.yml file:
nginx:
build: ./nginx/
container_name: nginx-container
ports:
- 8080:80
links:
- php
volumes_from:
- app-data
php:
build: ./php/
container_name: php-container
expose:
- 9000
links:
- mysql
volumes_from:
- app-data
app-data:
#image: php:7.0-fpm
build: ./php/
container_name: app-data-container
volumes:
- ./www/html/:/var/www/html/
- ./nginx/nginx:/etc/nginx/conf.d
command: “true”
mysql:
#image: mysql:5.7
build: ./mysql/
container_name: mysql-container
expose:
- 3306
ports:
- 3306:3306
volumes_from:
- mysql-data
environment:
MYSQL_ROOT_PASSWORD: secret
MYSQL_DATABASE: zavrel_db
MYSQL_USER: user
MYSQL_PASSWORD: password
mysql-data:
image: mysql:latest
container_name: mysql-data-container
volumes:
- /var/lib/mysql
command: "true"
phpmyadmin:
image: phpmyadmin/phpmyadmin
container_name: phpmyadmin-container
ports:
- 8888:80
links:
- mysql
environment:
PMA_HOST: mysql
Thank you.

Answer 1

Try change name of packet
php-mysqli

Answer 2

I solved the problem by deleting all images and containers. After that, I started and everything is fine.
docker rmi $(docker images -a -q)
docker rm $(docker ps -a -q)

Answer 3

I found the problem, the package is RUN pdo_mysqliso
i've added this RUN docker-php-ext-install pdo_mysqli in my docker-compose