feat: mysql-bkup v2 on bkupkit

MysQL backup and restore built on the shared bkupkit core:
streaming end to end, with no dump held in memory or written to
local disk.

.env.example

@@ -1,28 +1,30 @@
 ### Database
 DB_HOST=
 DB_PORT=3306
-DB_USERNAME=
+DB_USER=
 DB_PASSWORD=
 DB_NAME=
+#DB_SSL_MODE=disabled
 TZ=Europe/Paris
 
 ### Database Migration
 #TARGET_DB_HOST=
 #TARGET_DB_PORT=3306
 #TARGET_DB_NAME=
-#TARGET_DB_USERNAME=
+#DB_SSL_MODE=disabled
+#TARGET_DB_USER=
 #TARGET_DB_PASSWORD=
 
 ### Backup restoration
 #FILE_NAME=
 
 ### AWS  S3 Storage
-#ACCESS_KEY=
-#SECRET_KEY=
+#AWS_ACCESS_KEY=
+#AWS_SECRET_KEY=
 #AWS_S3_BUCKET_NAME=
 #AWS_S3_ENDPOINT=
 #AWS_REGION=
-#AWS_S3_PATH=
+#REMOTE_PATH=
 #AWS_DISABLE_SSL=false
 #AWS_FORCE_PATH_STYLE=true
 
@@ -30,29 +32,33 @@ TZ=Europe/Paris
 #BACKUP_CRON_EXPRESSION=@midnight
 ##Delete old backup created more than specified days ago
 #BACKUP_RETENTION_DAYS=7
+#BACKUP_RETENTION_COUNT=10
 
 ####SSH Storage
-#SSH_HOST_NAME=
-#SSH_PORT=22
-#SSH_USER=
-#SSH_PASSWORD=
-#SSH_IDENTIFY_FILE=/tmp/id_ed25519
+#SFTP_HOST=
+#SFTP_PORT=22
+#SFTP_USER=
+#SFTP_PASSWORD=
+#SFTP_IDENTITY_FILE=/tmp/id_ed25519
+#SFTP_KNOWN_HOSTS=/config/known_hosts
 
 ####FTP Storage
 #FTP_PASSWORD=
-#FTP_HOST_NAME=
+#FTP_HOST=
 #FTP_USER=
 #FTP_PORT=21
 #REMOTE_PATH=
 
 ## Azure Blob storage
-AZURE_STORAGE_CONTAINER_NAME=
-AZURE_STORAGE_ACCOUNT_NAME=
-AZURE_STORAGE_ACCOUNT_KEY=
+#AZURE_STORAGE_CONTAINER_NAME=
+#AZURE_STORAGE_ACCOUNT_NAME=
+#AZURE_STORAGE_ACCOUNT_KEY=
 
 #### Backup encryption
-#GPG_PUBLIC_KEY=/config/public_key.asc
-#GPG_PRIVATE_KEY=/config/private_key.asc
+#GPG_PUBLIC_KEY=/config/gnupg/public_key.asc
+#GPG_PRIVATE_KEY=/config/gnupg/private_key.asc
+#AGE_RECIPIENTS=age1...
+#AGE_IDENTITY_FILE=/config/age/identity.txt
 #GPG_PASSPHRASE=Your strong passphrase
 
 ## For multiple database backup on Docker or Docker in Swarm mode
@@ -75,7 +81,7 @@ AZURE_STORAGE_ACCOUNT_KEY=
 #MAIL_PASSWORD=
 #MAIL_FROM=Backup Jobs <backup-jobs@example.com>
 #MAIL_TO=backup@example.com,me@example.com,team@example.com
-#MAIL_SKIP_TLS=false
-
-
+#MAIL_TLS=starttls
+#MAIL_INSECURE_SKIP_VERIFY=false
 
+## Full reference: mysql-bkup config --env-docs