/composer directory does not have updated permissions after running "docker-php-serversideup-set-file-permissions"

[yusufkandemir]

When installing anything with Composer, it shows this warning:

Cannot create cache directory /composer/cache/files/, or directory is not writable. Proceeding without cache. See also cache-read-only config if your filesystem is read-only.

At some point, I even started experiencing errors when installing certain packages, so that was the moment I had enough of this and started investigating it.

The base image sets the user and group for /composer to www-data, as expected:

docker-php/src/variations/fpm-nginx/Dockerfile

Lines 140 to 142 in 4807f98

	# Make composer cache directory
	mkdir -p "${COMPOSER_HOME}" && \
	chown -R www-data:www-data "${COMPOSER_HOME}" && \

However, after using docker-php-serversideup-set-id www-data $USER_ID:$GROUP_ID, the ownership gets out of sync, and there are no checks to avoid this from happening.

Workaround/Fix:
Currently, the fix is running chown for that folder manually, e.g.

# Set the user ID and group ID for www-data
RUN docker-php-serversideup-set-id www-data $USER_ID:$GROUP_ID  && \
  docker-php-serversideup-set-file-permissions --owner $USER_ID:$GROUP_ID --service nginx && \
  chown -R $USER_ID:$GROUP_ID /composer
  # ^^^ add this line

Possible solutions:

• apply the same solution as the workaround, but put it into the template
• handle this internally in docker-php-serversideup-set-id, over at https://github.com/serversideup/docker-php
• update docker-php-serversideup-set-file-permissions to add a new service called composer, or add it as part of existing services, then update the container docs if needed, over at https://github.com/serversideup/docker-php

Bonus question, which should belong to the image repo: /var/cache/nginx seems to exist and is owned by www-data, but it's only chown'd in docker-php-serversideup-set-file-permissions for Debian, not others. I am not sure whether it is used or not on other ones, e.g. Alpine.

[jaydrogers]

Thanks for reporting this! I will get /composer added to the list of directories changed during docker-php-serversideup-set-file-permissions.