wordpress:cli container is not able to manipulate files

[mvasin]

Here's the docker-compose.yml file I use to bootstrap WordPress:

version: "3"

services:
  wordpress:
    image: wordpress
    ports: ["80:80"]
    volumes: ["wp_test:/var/www/html"]
    environment:
      WORDPRESS_DB_NAME: wordpress
      WORDPRESS_DB_USER: root
      WORDPRESS_DB_PASSWORD: secret

  mysql:
    image: mysql
    environment:
      MYSQL_ROOT_PASSWORD: secret

  cli:
    image: wordpress:cli
    volumes: ["wp_test:/var/www/html"]
    command: sh -c "sleep 20 && wp core install --path=/var/www/html --url=localhost --title=test --admin_user=test --admin_password=test [email protected]"

volumes:
  wp_test:

I start it with docker-compose up and when wp-cli sets up the installation, there is a warning:

cli_1        | Warning: Unable to create directory wp-content/uploads/2018/02. Is its parent directory writable by the server?

So, WP-CLI in cli container is not able to manipulate files on the volume attached to the main wordpress container.

I'm running docker compose 1.18.0 and and docker engine 17.12.0-ce on a mac.

[jaswrks]

👍 Having the same exact problem myself in the same environment.

[mvasin]

Seems like UIDs (numbers that stand behind linux user names) are out of sync, more details here, here and here.

[jaswrks]

I see! Thank you.

So this looks like the same issue reported in https://github.com/docker-library/wordpress/issues/256. I was able to work around this temporarily by running commands as the specific user ID 33, which is normally associated with www-data, but is actually xfs in the cli image.

docker-compose run -u 33 ...

[mvasin]

So I'll close this as a duplicate, let's continue in #256.