init

backup.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+echo "Beginning Hot-Backup of database..."
+# Check if MYSQL_HOST is defined
+if [ -z "$MYSQL_HOST" ]; then
+    echo "Error: MYSQL_HOST is not defined."
+    exit 1
+fi
+
+# Check if MYSQL_ROOT_PASS is defined
+if [ -z "$MYSQL_ROOT_PASS" ]; then
+    echo "Error: MYSQL_ROOT_PASS is not defined."
+    exit 1
+fi
+# Check if BACKUP_NAME is defined
+if [ -z "$BACKUP_NAME" ]; then
+    export BACKUP_NAME=$MYSQL_HOST
+fi
+
+#Figure out what to name the out file
+if $APPEND_DATE; then
+current_date=$(date +"%Y-%m-%d")
+    FILENAME="$BACKUP_NAME($current_date).sql"
+else 
+    FILENAME="$BACKUP_NAME.sql"
+fi
+
+mysqldump -u root --password=$MYSQL_ROOT_PASS --host=$MYSQL_HOST --all-databases > "/backup/$FILENAME.sql"

dockerfile

@@ -0,0 +1,4 @@
+FROM mysql:latest
+COPY backup.sh /usr/local/bin/
+RUN chmod +x /usr/loca/bin/backup.sh
+CMD ["cron","-f"]