How to update docker containers?

Question

PHP

The situation is as follows:
There is a docker assembly that has a php:7.1-fpm-alpine container.
The problem is that on 3 different computers completely different versions of php have become: 7.1.0, 7.1.4, 7.1.6.
Why did this happen and how can I update the container to the latest version?

Answer 1

If the image is specified as 7.1-fpm-alpine, then just the latest version will be loaded. Specify a specific one, for example 7.1.7-fpm-alpine and everyone will have the same