add #648 to CHANGELOG.md

Author: bsideup

CHANGELOG.md

@@ -6,7 +6,8 @@ All notable changes to this project will be documented in this file.
 ### Fixed
 - Fixed missing `commons-codec` dependency ([\#642](https://github.com/testcontainers/testcontainers-java/issues/642))
 - Fixed `HostPortWaitStrategy` throws `NumberFormatException` when port is exposed but not mapped ([\#640](https://github.com/testcontainers/testcontainers-java/issues/640))
-- Fixed log processing: multibyte unicode, linebreaks and ASCII color codes. Color codes can be turned on with `withRemoveAnsiCodes(false)` ([PR \#643](https://github.com/testcontainers/testcontainers-java/pull/643))
+- Fixed log processing: multibyte unicode, linebreaks and ASCII color codes. Color codes can be turned on with `withRemoveAnsiCodes(false)` ([\#643](https://github.com/testcontainers/testcontainers-java/pull/643))
+- Fixed Docker host IP detection within docker container (detect only if not explicitly set) ([\#648](https://github.com/testcontainers/testcontainers-java/pull/648))
 
 ### Changed
 - Support multiple HTTP status codes for HttpWaitStrategy ([\#630](https://github.com/testcontainers/testcontainers-java/issues/630))