WIP: Tugboat Config files

.tugboat/config.yml

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+services:
+  # What to call the service hosting the site.
+  php:
+    # Use PHP 7.x with Apache; this syntax pulls in the latest version of PHP 7
+    image: tugboatqa/php:7.4-apache
+
+    # Set this as the default service. This does a few things
+    #   1. Clones the git repository into the service container
+    #   2. Exposes port 80 to the Tugboat HTTP proxy
+    #   3. Routes requests to the preview URL to this service
+    default: true
+
+    # Wait until the mysql service is done building
+    depends: mysql
+
+    # A set of commands to run while building this service
+    commands:
+      # Commands that set up the basic preview infrastructure
+      init:
+        - printenv
+        - apt-get update
+        # Install bz2 and zip extensions
+        - apt-get install -y libbz2-dev libzip-dev
+        # Install opcache and mod-rewrite.
+        - docker-php-ext-install opcache bz2 zip bcmath
+        - a2enmod headers rewrite
+
+        # Up the memory limit to 512m
+        - echo "memory_limit = 512M" >> /usr/local/etc/php/conf.d/my-php.ini
+
+        # Install node10/npm to build source
+        - curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
+        - apt-get install -y nodejs
+
+        # Install drush-launcher, if desired.
+        - wget -O /usr/local/bin/drush https://github.com/drush-ops/drush-launcher/releases/download/0.6.0/drush.phar
+        - chmod +x /usr/local/bin/drush
+
+        # Link the document root to the expected path. This example links /web
+        # to the docroot.
+        - ln -snf "${TUGBOAT_ROOT}/docroot" "${DOCROOT}"
+
+        # A common practice in many Drupal projects is to store the config and
+        # private files outside of the Drupal root. If that's the case for your
+        # project, you can either specify the absolute paths to those
+        # directories in your settings.local.php, or you can symlink them in
+        # here. Here is an example of the latter option:
+        - ln -snf "${TUGBOAT_ROOT}/config" "${DOCROOT}/../config"
+        - ln -snf "${TUGBOAT_ROOT}/files-private" "${DOCROOT}/../files-private"
+
+      # Commands that import files, databases,  or other assets. When an
+      # existing preview is refreshed, the build workflow starts here,
+      # skipping the init step, because the results of that step will
+      # already be present.
+      update:
+        # Use the tugboat-specific Drupal settings.
+        - cp "${TUGBOAT_ROOT}/.tugboat/tugboat.settings.php" "${DOCROOT}/sites/default/settings/local.settings.php"
+
+        # Install/update packages managed by composer, including drush.
+        - COMPOSER_MEMORY_LIMIT=-1 composer install --optimize-autoloader
+
+        # Copy Drupal's public files directory from an external server. The
+        # public SSH key found in the Tugboat Repository configuration must be
+        # copied to the external server in order to use rsync over SSH.
+        #- rsync -arvz -e 'ssh -p 41864' --progress --delete SOURCE "DESTINATION"
+
+        # Alternatively, another common practice is to use the
+        # stage_file_proxy Drupal module. This module lets Drupal serve
+        # files from another publicly-accessible Drupal site instead of
+        # syncing the entire files directory into the Tugboat Preview.
+        # This results in smaller previews and reduces the build time.
+        #- COMPOSER_MEMORY_LIMIT=-1 composer require --dev drupal/stage_file_proxy
+        #- PHP_OPTIONS='-d memory_limit="1024M"' drush pm:enable --yes stage_file_proxy
+        #- drush config:set --yes stage_file_proxy.settings origin "http://www.lanfest.com"
+
+        # Set file permissions such that Drupal will not complain
+        - chgrp -R www-data "${DOCROOT}/sites/default/files"
+        - find "${DOCROOT}/sites/default/files" -type d -exec chmod 2775 {} \;
+        - find "${DOCROOT}/sites/default/files" -type f -exec chmod 0664 {} \;
+
+      # Commands that build the site. This is where you would add things
+      # like feature reverts or any other drush commands required to
+      # set up or configure the site. When a preview is built from a
+      # base preview, the build workflow starts here, skipping the init
+      # and update steps, because the results of those are inherited
+      # from the base preview.
+      build:
+        - COMPOSER_MEMORY_LIMIT=-1 composer install --optimize-autoloader
+        # Add Drush drupal installer here.
+        - PHP_OPTIONS='-d memory_limit="1024M"' drush cache:rebuild
+        # Config import might not be needed for the new install.
+        - PHP_OPTIONS='-d memory_limit="1024M"' drush config:import -y
+        - PHP_OPTIONS='-d memory_limit="1024M"' drush updatedb -y
+        - PHP_OPTIONS='-d memory_limit="1024M"' drush cache:rebuild
+
+  # What to call the service hosting MySQL. This name also acts as the
+  # hostname to access the service by from the php service.
+  mysql:
+    # Use the latest available 5.x version of MySQL
+    image: tugboatqa/mysql:5.7
+
+    # A set of commands to run while building this service
+    commands:
+      # Commands that import files, databases,  or other assets. When an
+      # existing preview is refreshed, the build workflow starts here,
+      # skipping the init step, because the results of that step will
+      # already be present.
+      update:
+        # Copy a database dump from an external server. The public
+        # SSH key found in the Tugboat Repository configuration must be
+        # copied to the external server in order to use scp.
+        - scp SOURCEFROMAHOSTING /tmp/sitebackup.sql
+        - cat /tmp/sitebackup.sql | mysql tugboat
+        - rm /tmp/sitebackup.sql

.tugboat/tugboat.settings.php

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+<?php
+$databases['default']['default'] = array (
+  'database' => 'tugboat',
+  'username' => 'tugboat',
+  'password' => 'tugboat',
+  'prefix' => '',
+  'host' => 'mysql',
+  'port' => '3306',
+  'namespace' => 'Drupal\\Core\\Database\\Driver\\mysql',
+  'driver' => 'mysql',
+);
+// Use the TUGBOAT_REPO_ID to generate a hash salt for Tugboat sites.
+$settings['hash_salt'] = hash('sha256', getenv('TUGBOAT_REPO_ID'));