Home / ubuntu / Questions / 1224164
Accepted
user289455
Asked: 2020-04-05 15:32:56 +0800 CST

How do I edit php.ini in a docker container?

  • 772

So I'm running the wordpress docker container and I want to increase the upload file size limit set in php.ini. My problem is I can't find that file anywhere.

I installed the container with a docker-compose file.

php container wordpress docker 18.04

2 Answers

  1. Best Answer

    For development purpose you could just bind mount it from the host to the container take a look here

    To a production environment you could think to personalize the container by build your own on top of it.

    For example in your docker-compose is declared the docker image of wordpress calleds wordpress:5.4.0-php7.2-fpm-alpine

    you can create your own Dockerfile to edit the base image, it will look like 

    FROM wordpress:5.4.0-php7.2-fpm-alpine
COPY ./php.ini /etc/php/7.2/apache2/php.ini

    the ./php.ini is your modified version and the path is the destination.

    Bothe above method are persistent and can be applied in build time and start time. But what about runtime, can change modification without restart the container?

    Sure you can, you can invoke the docker cp command:

    docker cp ./php.ini container_name:/etc/php/7.2/apache2/php.ini

    but the change are not persistent, NOTE: above command can be executed bidirectionally (put in container and take from the container)

    To persist the modification you done there is another way I'm aware:

    Commit the container modification, more info here

    docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]
    • 1

  2. If you can't access the php.ini in your docker container, try adding this line just on top of your script where you need it :

    date_default_timezone_set('Europe/Paris');
    • 0