Update wordpress Docker tag to v5.8.0

.drone.yml

@@ -22,3 +22,13 @@ steps:
 trigger:
   branch:
     - master
+---
+kind: pipeline
+name: recipe release
+steps:
+  - name: release a new version
+    image: thecoopcloud/drone-abra:latest
+    settings:
+      command: recipe wordpress release
+      deploy_key:
+        from_secret: abra_bot_deploy_key

README.md

@@ -14,6 +14,7 @@ Coöp Cloud + [Wordpress](https://wordpress.org) = 🥳
 - **Email**: ❶💚
 - **Tests**: ❷💛
 - **SSO**: No
+
 <!-- endmetadata -->
 
 ## Basic usage
@@ -56,6 +57,13 @@ _(Only tested using subdomains)_
 
 ## Email
 
+There is a local or remote SMTP relay configuration available.
+
+- **local**: `COMPOSE_FILE=compose.yml:compose.mailrelay.yml`
+- **remote**: `COMPOSE_FILE=compose.yml:compose.mailrelay.yml:compose.smtp.yml`
+
+Below are the instructions for the local relay.
+
 1. Deploy [`postfix-relay`][cc-postfix-relay]
 2. `abra app YOURAPPDOMAIN config`, and uncomment the email lines; change
    `MAIL_FROM` to make sure the domain is the same as `postfix-relay`'s

compose.yml

@@ -1,7 +1,7 @@
 version: "3.8"
 services:
   app:
-    image: "wordpress:5.7.2"
+    image: "wordpress:5.8.0"
     volumes:
       - "wordpress_content:/var/www/html/wp-content/"
     networks: