Composer template for Drupal 8 projects hosted on Pantheon and using Docker for local development environment

⚠️ Experimental project

This project template should provide a kickstart for

• managing your local development environment with Docker
• managing your site dependencies with Composer
• hosting your site on Pantheon

Usage

First you need to install docker, and docker-compose. If using OS X, install GNU coreutils or any other implementation of the realpath command.

After that you can create the project:

docker run --rm -v $(pwd):/var/www/html -v $HOME/.composer/cache:/root/.composer/cache -e COMPOSER_ALLOW_SUPERUSER=1 -e USER_UID=$(id -u) -e USER_GUID=$(id -g) drupaldocker/php:7-cli composer create-project --stability dev --ansi floe/drupal-project some-dir 8.x 

Use docker-compose to run applications inside the configured Docker containers:

• docker-compose run php-cli bash: Enter a shell to execute cli applications (Composer, Drush, Drupal Console, etc.)
• docker-compose up web: Start a web server inside its own Docker container, accessible as http://localhost.

Aliases for the most used commands to run inside the Docker containers are provided in the bin directory. It is suggested to put bin in your PATH while working on the project. The recommended way is to use direnv

See the docker-compose file for details of the configured containers.

The create-project command above passes ownership of all files to the project that is created. You should create a new git repository, update the README.me and composer.json file, then commit all files not excluded by the .gitignore file.

What does the template do?

• Docker containers to work on the project are defined in the docker-compose.yml file.
• Aliases for the most used commands to run inside the Docker containers are provided in the bin directory.
• Drupal will be installed in the web-directory.
• Autoloader is implemented to use the generated composer autoloader in vendor/autoload.php, instead of the one provided by Drupal (web/vendor/autoload.php).
• Modules (packages of type drupal-module) will be placed in web/modules/contrib/
• Theme (packages of type drupal-theme) will be placed in web/themes/contrib/
• Profiles (packages of type drupal-profile) will be placed in web/profiles/contrib/
• Creates default writable versions of settings.php and services.yml.
• Creates sites/default/files-directory.
• Latest version of drush is installed locally for use at vendor/bin/drush.
• Latest version of DrupalConsole is installed locally for use at vendor/bin/drupal.

Updating Drupal Core

This project will attempt to keep all of your Drupal Core files up-to-date; the project drupal-composer/drupal-scaffold is used to ensure that your scaffold files are updated every time drupal/core is updated. If you customize any of the "scaffolding" files (commonly .htaccess), you may need to merge conflicts if any of your modfied files are updated in a new release of Drupal core.

Follow the steps below to update your core files.

1. Run composer update drupal/core --with-dependencies to update Drupal Core and its dependencies.
2. Run git diff to determine if any of the scaffolding files have changed. Review the files for any changes and restore any customizations to .htaccess or robots.txt.
3. Commit everything all together in a single commit, so web will remain in sync with the core when checking out branches or running git bisect.
4. In the event that there are non-trivial conflicts in step 2, you may wish to perform these steps on a branch, and use git merge to combine the updated core files with your customized files. This facilitates the use of a three-way merge tool such as kdiff3. This setup is not necessary if your changes are simple; keeping all of your modifications at the beginning or end of the file is a good strategy to keep merges easy.

FAQ

How can I apply patches to downloaded modules?

If you need to apply patches (depending on the project being modified, a pull request is often a better solution), you can do so with the composer-patches plugin.

To add a patch to drupal module foobar insert the patches section in the extra section of composer.json:

"extra": {
    "patches": {
        "drupal/foobar": {
            "Patch description": "URL to patch"
        }
    }
}