Fix exit code for mongo:export when SSH_TTY is not present

commands

@@ -122,7 +122,9 @@ case "$1" in
 
     [[ -n $SSH_TTY ]] && stty -opost
     docker exec "$SERVICE_NAME" bash -c "DIR=\$(mktemp -d) && mongodump -d $SERVICE -o \"\$DIR\" -u \"$SERVICE\" -p \"$PASSWORD\" --authenticationDatabase \"$SERVICE\" 1>&2 && tar cf - -C \"\$DIR\" . && rm -rf \"\$DIR\""
+    status=$?
     [[ -n $SSH_TTY ]] && stty opost
+    exit $status
     ;;
 
   $PLUGIN_COMMAND_PREFIX:import)