Docker, memory exhausted - docker

Question

I am currently working on my new docker setup. Below is my dockerfile, which is made with php-apache and phpmyadmin. No matter what I do, I get memory exhausted e.g:
Fatal error: Allowed memory size of 2097152 bytes exhausted (tried to allocate 4096 bytes) in /var/www/html/wp-includes/formatting.php on line 3622
memory_size in php is et so: 1024MB (just for testing), and no mater what I try, this error always appear. Is this something in Docker special that you have to set?
Googling the error, I can se that some people has issues with apcu. I even tried to add
"apc.enable_cli=1", but that makes no difference what so ever.
Edit: Should probably mention that the file itself is not the issue (working on other environments with no memory ex). Its like docker itself is not reacting on the memory limit.
Dockerfile:
services:
mysql:
image: "mysql:latest"
container_name: "examplewp-mysql"
restart: always
environment:
- MYSQL_DATABASE=examplewp
- MYSQL_ROOT_PASSWORD=examplewp
- MYSQL_USER=examplewp
- MYSQL_PASSWORD=examplewp
volumes:
- dbdata:/var/lib/mysql
- ./logs/mysql/:/var/log/mysql
- ./docker/mysql/conf.d:/etc/mysql/conf.d
ports:
- "3307:3306"
networks:
- backend-network
phpmyadmin:
image: "phpmyadmin/phpmyadmin"
container_name: examplewp-phpmyadmin
links:
- mysql
environment:
PMA_HOST: mysql
UPLOAD_LIMIT: 64M
restart: always
ports:
- 9081:80
networks:
- backend-network
php:
image: php:7.4-apache
container_name: examplewp-phpapache
build:
context: ./docker/apache
ports:
- 90:80
volumes:
- ./app:/var/www/html/
- ./Docker/php/php.ini:/usr/local/etc/php/conf.d/php.ini
networks:
- backend-network
networks:
backend-network:
driver: bridge
volumes:
dbdata:
driver: local
Php.ini file:
date.timezone = UTC
log_errors = On
error_log = /var/log/php/error.log
max_execution_time = 10000
post_max_size = 1024M
upload_max_filesize = 1024M
memory_limit = 1024MB