How to call another in one container (php)?

Question

PHP

There is a completely standard docker-compose: nginx, db, php, composer. The site is processed by a container with php 7.4 In this container, a script with the code exec_shell('php -f somescript.php') is launched. Is it possible to run php -f somescript.php through container from different php version i.e. separate from the one being launched? In general, launching an application in one container from another.

Answer 1

There are two ways to do this:
1. Mount (or use the http api) a Docker socket (/var/run/docker.sock) inside a container, and manage containers on the host machine, or use the . !!! HIGHLY DO NOT RECOMMEND!!!
2. Use Dind (docker in docker) image and install PHP on it and create child containers. I DO NOT RECOMMEND
In general, it is worth reviewing the infrastructure and architecture of the application to solve this problem, more safely and concisely.

Answer 2

Referring to http.

Answer 3

I think it's worth raising a separate Docker container with the required PHP version, and accessing it.
Using the HTTP protocol - in the parent PHP script, use a regular curlor school script to file_get_contents()pull some local URL.
It can be RoadRunner or pull the NGINX already existing in another container, which will transfer requests to a certain URL not to the main PHP-FPM, but to the one with a different version.