Update README.md

Author: lightszentip

README.md

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 # ci-docker-php-node
 CI Docker container for gitlab ci and github runner
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+This Repository build each day the current version of the dockerfile for the php versions 7.4,8,8.1 and 8.2
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+The image can use in each gitlab-ci and github action pipeline to build php apps with composer and npm
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+The image has the following functions:
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+* Composer v2 https://getcomposer.org/
+* LTS Node https://nodejs.org/en/
+* Latest NPM Version
+* PHP Version depend on image version