Dockerfile

# syntax=docker/dockerfile:1
FROM php:7.4-cli

RUN apt-get update -y && apt-get install -y --no-install-recommends \
    libzip-dev libbz2-dev && \
    docker-php-ext-install pcntl && \
    docker-php-ext-install bz2 && \
    docker-php-ext-install zip && \
    php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" && \
    php -r "if (hash_file('sha384', 'composer-setup.php') === '906a84df04cea2aa72f40b5f787e49f22d4c2f19492ac310e8cba5b96ac8b64115ac402c8cd292b8a03482574915d1a8') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;" && \
    php composer-setup.php --install-dir=/usr/local/bin --filename=composer && \
    php -r "unlink('composer-setup.php');" && \
    composer --global config process-timeout 1000

WORKDIR /opt/project