Dockerfile

# Container image that runs your code
FROM php:7.4.12-cli-alpine3.11

COPY --from=composer:1 /usr/bin/composer /usr/local/bin/composer

RUN /usr/local/bin/composer global require magento/magento-coding-standard:*

RUN ~/.composer/vendor/bin/phpcs --config-set installed_paths ../../magento/magento-coding-standard/,../../phpcompatibility/php-compatibility/PHPCompatibility
RUN echo memory_limit = -1 >> /usr/local/etc/php/conf.d/custom-memory.ini
# Copies your code file from your action repository to the filesystem path `/` of the container
COPY entrypoint.sh /entrypoint.sh

# Code file to execute when the docker container starts up (`entrypoint.sh`)
ENTRYPOINT ["/entrypoint.sh"]