entrypoint: unset no longer needed MYSQLDUMP_ARGS variable

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixed
+- entrypoint: unset no longer needed `MYSQLDUMP_ARGS` variable
 
 ## [2.0.0] - 2021-04-11
 ### Added

entrypoint.sh

@@ -20,5 +20,6 @@ if [ -z "$MYSQLDUMP_ARGS" ]; then
     mysqldump --help
     exit 1
 fi
+unset MYSQLDUMP_ARGS
 
 exec "$@"