added mariadb 10.4

.drone.yml

@@ -66,6 +66,28 @@ steps:
       dockerfile: Dockerfile
       build_args:
         - MARIA_VERSION=10.3
+      auto_tag: false
+      force_tag: true
+      daemon_off: false
+      password:
+        from_secret: docker_password
+      registry: docker.asperti.com
+      repo: docker.asperti.com/paspo/mariadb-backup-slave
+      tags:
+        - maria-10.3
+      username:
+        from_secret: docker_username
+    when:
+      event:
+      - tag
+
+  - name: build_and_publish_10_4
+    image: plugins/docker:linux-amd64
+    pull: always
+    settings:
+      dockerfile: Dockerfile
+      build_args:
+        - MARIA_VERSION=10.4
       auto_tag: true
       force_tag: true
       daemon_off: false
@@ -75,9 +97,9 @@ steps:
       repo: docker.asperti.com/paspo/mariadb-backup-slave
       tags:
         - latest
-        - maria-10.3
+        - maria-10.4
       username:
         from_secret: docker_username
     when:
       event:
-      - tag
+      - tag

Dockerfile

@@ -1,4 +1,4 @@
-ARG MARIA_VERSION=10.3
+ARG MARIA_VERSION=10.4
 FROM mariadb:${MARIA_VERSION}
 
 RUN apt-get update && \

README.md

@@ -219,8 +219,8 @@ docker-compose up -d
 ```
 
 ## How to use different mariadb version
-The default is mariadb 10.3.
+The default is mariadb 10.4.
-If you want, you can use mariadb 10.2 or 10.1 by changing this line in **docker-compose.yaml**:
+If you want, you can use mariadb 10.3, 10.2 or 10.1 by changing this line in **docker-compose.yaml**:
 ```
   image: docker.asperti.com/paspo/mariadb-backup-slave:maria-10.1
 ```