Redis – No application encryption key has been specified in docker container

I want to start work with docker. I have started nginx, laravel, and mysql containers. But I have a problem. When I want to visit my page I get:

No application encryption key has been specified

In my env file in cointainer I have APP_KEY=base64:isqaS8uLDmiO47hZLTTKmheHM13uBkeA6wTWG1nF5E4= generated by command php artisan key:generate from whitch i get Application key set successfully..

When I check by php artisan tinker value env('APP_KEY') i get only "". What’s more, I found that when in .env file is no APP_KEY section, this command doesn’t work.

Permissions to env file looks like this:
-rwxr-xr-x 1 www-data www-data 829 Sep 17 12:22 .env

Error from log file

[2020-09-17 12:23:19] local.ERROR: No application encryption key has been specified. {"exception":"[object] (RuntimeException(code: 0): No application encryption key has been specified. at /var /www/vendor/laravel/framework/src/Illuminate/Encryption/EncryptionServiceProvider.php:44) [stacktrace] #0 /var/www/vendor/laravel/framework/src/Illuminate/Support/helpers.php(422): Illuminate\Encryption\EncryptionServiceProvider->Illuminate\Encryption\{closure}('') #1 /var/www/vendor/laravel/framework/src/Illuminate/Encryption/EncryptionServiceProvider.php(48): tap('', Object(Closure)) #2 /var/www/vendor/laravel/framework/src/Illuminate/Encryption/EncryptionServiceProvider.php(24): Illuminate\Encryption\EncryptionServiceProvider->key(Array) #3 /var/www/vendor/laravel/framework/src/Illuminate/Container/Container.php(800): Illuminate\Encryption\EncryptionServiceProvider->Illuminate\Encryption\{closure}(Object(Illuminate\Foundat ion\Application), Array) #4 /var/www/vendor/laravel/framework/src/Illuminate/Container/Container.php(682): Illuminate\Container\Container->build(Object(Closure)) #5 /var/www/vendor/laravel/framework/src/Illuminate/Container/Container.php(630): Illuminate\Container\Container->resolve('encrypter', Array) #6 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(768): Illuminate\Container\Container->make('encrypter', Array) #7 /var/www/vendor/laravel/framework/src/Illuminate/Container/Container.php(946): Illuminate\Foundation\Application->make('encrypter') #8 /var/www/vendor/laravel/framework/src/Illuminate/Container/Container.php(874): Illuminate\Container\Container->resolveClass(Object(ReflectionParameter)) #9 /var/www/vendor/laravel/framework/src/Illuminate/Container/Container.php(835): Illuminate\Container\Container->resolveDependencies(Array) #10 /var/www/vendor/laravel/framework/src/Illuminate/Container/Container.php(682): Illuminate\Container\Container->build('App\\Http\\Middle...') #11 /var/www/vendor/laravel/framework/src/Illuminate/Container/Container.php(630): Illuminate\Container\Container->resolve('App\\Http\\Middle...', Array) #12 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(768): Illuminate\Container\Container->make('App\\Http\\Middle...', Array) #13 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(215): Illuminate\Foundation\Application->make('App\\Http\\Middle...') #14 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(189): Illuminate\Foundation\Http\Kernel->terminateMiddleware(Object(Illuminate\Http\Request), Object(Illumin ate\Http\Response)) #15 /var/www/public/index.php(60): Illuminate\Foundation\Http\Kernel->terminate(Object(Illuminate\Http\Request), Object(Illuminate\Http\Response)) #16 {main} "}

I tried to restart the server, clear the cache and remove and add a new key, but this didn’t help.

EDIT:
This is my dockerfile

FROM php:7.4.0-fpm

COPY composer.lock composer.json /var/www/

COPY database /var/www/database

WORKDIR /var/www

RUN apt-get update && apt-get -y install git && apt-get -y install zip

RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

COPY . /var/www 

RUN chown -R www-data:www-data 
        /var/www/storage 
        /var/www/bootstrap/cache

RUN  apt-get install -y libmcrypt-dev 
        libmagickwand-dev --no-install-recommends 
        && pecl install mcrypt-1.0.3 
        && docker-php-ext-install pdo_mysql 
        && docker-php-ext-enable mcrypt

RUN mv .env.prod .env

RUN composer install

RUN chown -R www-data:www-data /var/www

RUN chown -R $USER:www-data storage 
        && chown -R $USER:www-data bootstrap/cache
        && chmod -R 775 storage 
        && chmod -R 775 bootstrap/cache

RUN php artisan key:generate

And this is my docker-compose.yml

version: '3.6'

services: 

    app:
        container_name: laravel_app
        build: 
            context: ./
            dockerfile: development/app.dockerfile
        volumes: 
            - ./storage:/var/www/storage
        env_file: '.env.prod'
        environment: 
            - "DB_HOST=database"
            - "REDIS_HOST=cache"

    web:
        container_name: nginx_server
        build: 
            context: ./
            dockerfile: development/web.dockerfile
        volumes: 
            - ./storage/logs/:/var/log/nginx_server
        ports: 
            - 8990:80
        
    database:
        container_name: mysql_database
        image: mysql:8.0
        volumes: 
            - dbdata:/var/lib/mysql
        environment: 
            - "MYSQL_DATABSE=Baly"
            - "MYSQL_USER=admin"
            - "MYSQL_PASSWORD=admin"
            - "MYSQL_ROOT_PASSWORD=root"
        ports: 
            - 8991:3006
    
    cache:
        image: redis:3.0-alpine

volumes: 
    dbdata: