Change to LANG=C, with no UTF-8, keeping CCSID 819

Dockerfile-server

@@ -110,7 +110,7 @@ RUN chmod ug+x /usr/local/bin/runmqserver \
 EXPOSE 1414 9157 9443
 ENV MQ_OVERRIDE_DATA_PATH=/mnt/mqm/data MQ_OVERRIDE_INSTALLATION_NAME=Installation1 MQ_USER_NAME="mqm" PATH="${PATH}:/opt/mqm/bin"
 ENV MQ_GRACE_PERIOD=30
-ENV LANG=en_US.UTF-8 AMQ_DIAGNOSTIC_MSG_SEVERITY=1 AMQ_ADDITIONAL_JSON_LOG=1 LOG_FORMAT=basic
+ENV LANG=C AMQ_DIAGNOSTIC_MSG_SEVERITY=1 AMQ_ADDITIONAL_JSON_LOG=1 LOG_FORMAT=basic
 # We can run as any UID
 USER 1001
 ENV MQ_CONNAUTH_USE_HTP=false