Docker-compose run script after container starts - laravel

Question

My goal is to have a one-liner (kinda) for building and starting my app. I want to be able to execute this command and run several additional commands related to my app (like migrations, init and starting a websocket server).
But when I try to use ENTRYPOINT directive my php service runs commands but the service itself is not working properly.
docker log nginx shows me this error:
[error] 31#31: *2 connect() failed (111: Connection refused) while connecting to upstream,
If I comment out ENTRYPOINT in back.dockerfile my app runs fine, but I have to manually run those artisan commands
docker-compose build && docker-compose up -d
Is there a way to achieve such result?
My docker-compose.yml
networks:
laravel:
services:
nginx:
image: nginx:stable-alpine
container_name: nginx
volumes:
- ./app:/var/www/html
- ./nginx/default.conf:/etc/nginx/conf.d/default.conf
ports:
- "8000:80"
depends_on:
- php
- mysql
networks:
- laravel
tty: true
php:
build:
context: .
dockerfile: ./docker/back.dockerfile
container_name: php
ports:
- "9000:9000"
depends_on:
- node
networks:
- laravel
node:
build:
context: .
dockerfile: ./docker/front.dockerfile
container_name: node
ports:
- "3000:3000"
networks:
- laravel
mysql:
image: mysql:8.0
container_name: mysql
restart: unless-stopped
ports:
- "3306:3306"
volumes:
- ./mysql:/var/lib/mysql
environment:
MYSQL_DATABASE: laravel
MYSQL_USER: laravel
MYSQL_PASSWORD: laravel
MYSQL_ROOT_PASSWORD: root
SERVICE_NAME: mysql
networks:
- laravel
back.dockerfile
FROM php:7.4-fpm-alpine
RUN docker-php-ext-install pdo pdo_mysql
RUN php -r "readfile('http://getcomposer.org/installer');" | php -- --install-dir=/usr/bin/ --filename=composer
RUN apk update
RUN apk upgrade
RUN apk add bash
RUN alias composer='php /usr/bin/composer'
ENV COMPOSER_ALLOW_SUPERUSER 1
COPY ./app/composer.json ./app/composer.lock ./
COPY ./app .
RUN composer install --no-scripts --prefer-dist --optimize-autoloader
RUN chown -R www-data:www-data /var/www/html
RUN chmod -R 755 /var/www/html/storage
COPY ./entrypoint.sh /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]
EXPOSE 6001
entrypoint.sh
#!/bin/sh
set -e
php artisan migrate --path 'database/migrations'
php artisan app:init
php artisan websockets:serve
exec "$#"