restore lost README content

README.md

@@ -40,6 +40,66 @@ Below are the instructions for the local relay.
    `$DOMAIN` or in its `$EXTRA_SENDER_DOMAINS`
 3. `abra app deploy <app-name>`
 
-[abra]: https://git.autonomic.zone/autonomic-cooperative/abra
-[cc-traefik]: https://git.autonomic.zone/coop-cloud/traefik
-[cc-postfix-relay]: https://git.autonomic.zone/coop-cloud/postfix-relay
+## WP-CLI
+
+You can either run using `abra app cmd`:
+```bash
+abra app cmd <app-name> app wp -- core check-update --major
+```
+
+Or by entering the app shell:
+1. `abra app run <app-name> app bash`
+2. `su -s /bin/bash www-data -c "wp core check-update --major"`
+
+## Network (Multi-site)
+
+1. Set up as above
+2. `abra app config <app-name>`, and uncomment `#MULTISITE=enable`
+3. `abra app deploy <app-name>`
+4. Log into the WordPress admin dashboard, go to **Tools → Network Setup**
+5. Don't worry about the suggested file changes
+6. `abra app config <app-name>` again and set `MULTISITE` to either `subdomain` or `subfolder` depending on your setup.
+7. `abra app deploy <app-name>`
+
+## Installing a custom theme
+
+`abra app cp <app-name> ~/path/to/local/theme wordpress:/var/www/html/wp-content/themes/`
+
+## Authentik Integration
+
+Configure the following envs via `abra app config <app-name>`:
+```bash
+COMPOSE_FILE="$COMPOSE_FILE:compose.authentik.yml"
+AUTHENTIK_DOMAIN=authentik.example.com
+AUTHENTIK_SECRET_NAME=authentik_example_com_wordpress_secret_v1  # the same as in authentik
+AUTHENTIK_ID_NAME=authentik_example_com_wordpress_id_v1  # the same as in authentik
+```
+
+`abra app cmd <app-name> app set_authentik`
+
+## Tests
+
+Run the full test suite for this repository:
+
+```sh
+bash tests/run.sh
+```
+
+### Prerequisites
+
+The test suite uses several tools. Install them with your equivalent of:
+
+```sh
+brew install shellcheck gomplate
+```
+Some tests skip gracefully if their dependencies are missing.
+
+## Migrate from a non-Co-op Cloud WordPress install
+
+Make a `.tar.gz` backup of the site's `wp-content` dir and a `.sql.gz` backup of the database.
+
+1. `abra app wp.example.com restore app wp-content.tar.gz`
+2. `abra app wp.example.com restore db wordpress.sql.gz`
+
+Lastly, if there's a domain name change, run a search and replace:
+`abra app wp.example.com wp "search-replace https://old.example.com https://wp.example.com"`