How to enable theme on WordPress on Docker

I am using docker to run a develop environment for several wordpress themes / plugins. However, I can’t figure out how to enable my themes automatically on container creation. Normally I would just use wp-cli for this. I have created a custom image that extends the official wordpress image, but I can’t figure out how to make the wp-cli commands run after the /var/www/html folder get’s setup (I think this is created by the wordpress image entrypoint script). If I put the commands in a “RUN” command in the dockerfile, the commands just fail since the /var/www/html directory is empty. However, if I connect to the container once it is setup, the directory is populated, and wp-cli works just fine. How can I run a command after the entrypoint.sh from the parent image is run?

Here is the content of my dockerfile (which does not work):

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  • FROM wordpress
    MAINTAINER Me!
    COPY docker-install/wp-cli.phar /usr/local/bin/wp
    WORKDIR /var/www/html
    RUN chmod u+x /usr/local/bin/wp
    RUN /usr/local/bin/wp core install --title="Test WP Site" --admin_user=admin --admin_password=something --admin_email=my@cool.email  --url=localhost:8080 --allow-root
    RUN /usr/local/bin/wp theme activate mytheme --allow-root
    

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  • One Solution collect form web for “How to enable theme on WordPress on Docker”

    The short answer: You can’t. The ENTRYPOINT and CMD is are used at Docker container runtime, not build time. In this case, the WordPress environment is actually started at container runtime so you can’t interact with it during a build.

    The long answer: You might be able to help accomplish your goals by using Docker Compose to create two services, one for WordPress and another for the WordPress CLI variant (see the cli tags at https://hub.docker.com/_/wordpress/) with a volumes_from the first one. Then, you could use docker-compose run cli-service wp-cli command to run your commands.

    Docker will be the best open platform for developers and sysadmins to build, ship, and run distributed applications.