How to access an external software package from within a docker container?

Question

Docker

There is a docker-compose.yml with php and nginx, a software package with the <command_name> command installed via yum, and an index.php script like this: I start docker: I open index.php in the browser and, of course, nothing happens. How to fix?
exec("<имя_команды>2>&1");
docker-compose up -d

Answer 1

php and nginx in the same container?