Mysql dump (#837)

* Mysql backup

* added logo

* Reviews

public/v4/apps/mysql-backup.yml

@@ -0,0 +1,46 @@
+captainVersion: 4
+services:
+    $$cap_appname-db:
+        image: databack/mysql-backup:$$cap_mysql_backup_version
+        restart: always
+        environment:
+            DB_SERVER: $$cap_db_server
+            DB_PORT: $$cap_db_port
+            DB_USER: $$cap_db_user
+            DB_PASS: $$cap_db_password
+        caproverExtra:
+            notExposeAsWebApp: 'true'
+caproverOneClickApp:
+    variables:
+        - id: $$cap_mysql_backup_version
+          label: Mysql Backup Version
+          defaultValue: 'v0.11.0'
+          description: Check out their Docker page for the valid tags https://hub.docker.com/r/databack/mysql-backup/tags
+          validRegex: /^([^\s^\/])+$/
+        - id: $$cap_db_server
+          label: Database Server
+          defaultValue: 'srv-captain--'
+          description: Database Server
+          validRegex: /^([^\s^\/])+$/
+        - id: $$cap_db_port
+          label: Database Port
+          defaultValue: '3306'
+          description: Database Port
+          validRegex: /^([^\s^\/])+$/
+        - id: $$cap_db_user
+          label: Database User
+          defaultValue: 'root'
+          description: Database User
+          validRegex: /^([^\s^\/])+$/
+        - id: $$cap_db_password
+          label: Database Password
+          defaultValue: ''
+          description: Database Password
+          validRegex: /^([^\s^\/])+$/
+    instructions:
+        start: This installation just aims to create the initial container, you should at the end revise the documentation (https://hub.docker.com/r/databack/mysql-backup) and set the extra environment parameters that fit your needs. Such as scheduling and to where you want to send your backups (AWS, SMB, etc)
+        end: 'Mysql backup has been successfully deployed. Check https://hub.docker.com/r/databack/mysql-backup extra environments and set to your needs.'
+    displayName: Mysql-Backup
+    isOfficial: false
+    description: mysql-backup is a simple way to do MySQL database backups and restores when the database is running in a container.
+    documentation: Taken from https://hub.docker.com/r/databack/mysql-backup