chore: rename environment variable for database migration operation

docs/how-tos/migrate.md

@@ -10,11 +10,13 @@ nav_order: 9
 To migrate the database, you need to add `migrate` command.
 
 {: .note }
-The Mysql backup has another great feature: migrating your database from a source database to another.
+The Mysql backup has another great feature: migrating your database from a source database to a target.
 
 As you know, to restore a database from a source to a target database, you need 2 operations: which is to start by backing up the source database and then restoring the source backed database to the target database.
 Instead of proceeding like that, you can use the integrated feature `(migrate)`, which will help you migrate your database by doing only one operation.
 
+{: .warning }
+The `migrate` operation is irreversible, please backup your target database before this action.
 
 ### Docker compose
 ```yml
@@ -30,18 +32,18 @@ services:
     volumes:
       - ./backup:/backup
     environment:
-      ## Target database
+      ## Source database
       - DB_PORT=3306
       - DB_HOST=mysql
       - DB_NAME=database
       - DB_USERNAME=username
       - DB_PASSWORD=password
-      ## Source database
-      - SOURCE_DB_HOST=mysql2
-      - SOURCE_DB_PORT=3306
-      - SOURCE_DB_NAME=sourcedb
-      - SOURCE_DB_USERNAME=jonas
-      - SOURCE_DB_PASSWORD=password
+      ## Target database
+      - TARGET_DB_HOST=target-mysql
+      - TARGET_DB_PORT=3306
+      - TARGET_DB_NAME=dbname
+      - TARGET_DB_USERNAME=username
+      - TARGET_DB_PASSWORD=password
     # mysql-bkup container must be connected to the same network with your database
     networks:
       - web
@@ -49,30 +51,31 @@ networks:
   web:
 ```
 
+
 ### Migrate database using Docker CLI
 
 
 ```
-## Target database
-DB_PORT=3306
+## Source database
 DB_HOST=mysql
-DB_NAME=targetdb
-DB_USERNAME=targetuser
+DB_PORT=3306
+DB_NAME=dbname
+DB_USERNAME=username
 DB_PASSWORD=password
 
-## Source database
-SOURCE_DB_HOST=mysql2
-SOURCE_DB_PORT=3306
-SOURCE_DB_NAME=sourcedb
-SOURCE_DB_USERNAME=sourceuser
-SOURCE_DB_PASSWORD=password
+## Taget database
+TARGET_DB_HOST=target-mysql
+TARGET_DB_PORT=3306
+TARGET_DB_NAME=dbname
+TARGET_DB_USERNAME=username
+TARGET_DB_PASSWORD=password
 ```
 
 ```shell
  docker run --rm --network your_network_name \
  --env-file your-env
  -v $PWD/backup:/backup/ \
- jkaninda/mysql-bkup migrate -d database_name
+ jkaninda/mysql-bkup migrate
 ```
 
 ## Kubernetes
@@ -96,28 +99,33 @@ spec:
         command:
         - /bin/sh
         - -c
-        - migrate -d targetdb
+        - migrate
         resources:
           limits:
             memory: "128Mi"
             cpu: "500m"
         env:
-        ## Target DB
+        ## Source Database
           - name: DB_HOST
-            value: "postgres-target"
+            value: "mysql"    
+          - name: DB_PORT
+            value: "3306"  
+          - name: DB_NAME
+            value: "dbname"
           - name: DB_USERNAME
-            value: "mysql"
+            value: "username"
           - name: DB_PASSWORD
             value: "password"
-          ## Source DB
-          - name: SOURCE_DB_HOST
-            value: "postgres-source"
-          - name: SOURCE_DB_NAME
-            value: "sourcedb"
-          - name: SOURCE_DB_USERNAME
-            value: "postgres"
-          # Please use secret!
-          - name: SOURCE_DB_PASSWORD
+          ## Target Database
+          - name: TARGET_DB_HOST
+            value: "target-mysql"    
+          - name: TARGET_DB_PORT
+            value: "3306"
+          - name: TARGET_DB_NAME
+            value: "dbname"
+          - name: TARGET_DB_USERNAME
+            value: "username"
+          - name: TARGET_DB_PASSWORD
             value: "password"
       restartPolicy: Never
 ```