Update to include MARIADB_VERSION in env file which sets the mariadb version (laradock#2185)

Author: zslavis

docker-compose.yml

@@ -401,6 +401,7 @@ services:
           - http_proxy
           - https_proxy
           - no_proxy
+          - MARIADB_VERSION=${MARIADB_VERSION}
       volumes:
         - ${DATA_PATH_HOST}/mariadb:/var/lib/mysql
         - ${MARIADB_ENTRYPOINT_INITDB}:/docker-entrypoint-initdb.d

env-example

@@ -269,6 +269,7 @@ MSSQL_PORT=1433
 
 ### MARIADB ###############################################
 
+MARIADB_VERSION=latest
 MARIADB_DATABASE=default
 MARIADB_USER=default
 MARIADB_PASSWORD=secret

mariadb/Dockerfile

@@ -1,4 +1,5 @@
-FROM mariadb:latest
+ARG MARIADB_VERSION=latest
+FROM mariadb:${MARIADB_VERSION}
 
 LABEL maintainer="Mahmoud Zalt <mahmoud@zalt.me>"