Add some deployment documentation

Ref #13

README.md

@@ -2,24 +2,61 @@
 
 A template for a Wordpress site using Bedrock (Composer) + Docker.
 
-Based on [`autonomic-cooperative/wordpress-docker-composer`](https://git.autonomic.zone/autonomic-cooperative/wordpress-docker-composer)
-
-NB.
-* If you import a database from a live site, you will have to change the upload path (in Settings->Media) to `/app/web/app/uploads`
-* Debug log is here: `./src/web/app/debug.log`
-
+Based on
+[`autonomic-cooperative/wordpress-docker-composer`](https://git.autonomic.zone/autonomic-cooperative/wordpress-docker-composer)
+and
+[`autonomic-cooperative/wordpress-nginx-docker`](https://git.autonomic.zone/autonomic-cooperative/wordpress-nginx-docker).
 
 ## Quick start
 
-1. Create a new repository in Gitea, using this repository as a template
-2. Clone the new repository
-3. Copy `src/.env.example` to `src/.env`
-4. Run `docker-compose up`
+1. Install Docker, docker-compose, and git
+2. Create a new repository in Gitea, using this repository as a template
+3. Clone the new repository
+4. Copy `src/.env.example` to `src/.env`
+5. Run `docker-compose up`
 
 You should now be able to access the local site on http://localhost
 
+## Development
+
+### Debugging
+
+Set `WP_ENV=development` in `src/.env` to enable debugging output and the debug
+log, and enable plugin and theme installation via the dashboard.
+
+The debug log is located:
+
+- outside containers: `./src/web/app/debug.log`
+- inside containers: `/app/web/app/debug.log`
+
+### Importing a database dump
+
+Assuming you have `dump.sql.gz` in the current directory:
+
+`zcat dump.sql.gz | docker-compose exec -T db mysql -u wordpress -pwordpress wordpress`
+
+Post-restore steps:
+* If **the upload path** was set in the database, you will need to change it (in
+  Settings → Media) to `/app/web/app/uploads`
+* If the site you're loading used a **non-standard database table prefix** (i.e.
+  not `wp`), you'll need to specify it as `DB_PREFIX` in `src/.env`.
+
 ## Deployment
 
 ### Initial set-up
 
+Our recommended production deployment set-up is:
+
+- Web server: Nginx (ease of configuration vs. Apache, nobody seems to be using
+  other web servers for Wordpress)
+- PHP: PHP-FPM (better performance and security than mod_php)
+- Database: MariaDB (flipped a coin between that and MySQL..)
+- Auto-deployment: Drone (Autonomic standard)
+- Updates: renovate-bot (Autonomic standard)
+- Orchestration: Docker "swarm mode" / Co-op Cloud (Autonomic standard, also
+  standardises backups and SSL, and makes it easier to migrate between servers)
+- Host operating system: Debian (but others should work too)
+- Server provisioning: Our [autonomic-cooperative/infrastructure Ansible
+  playbooks](https://git.autonomic.zone/autonomic-cooperative/infrastructure/)
+
 ### Auto-deployment