+ allowing to execute mysql query in bash script helper for entering mysql client in db container

bash/mysql.sh

@@ -12,4 +12,18 @@ if [[ -z "${CONTAINER}" ]]; then
   exit 1
 fi
 
-$DOCKER_CMD exec -ti ${CONTAINER} bash -c 'LANG=ru_RU.UTF-8 mysql -u root -p123456'
+MYSQL_CMD='mysql -u root -p123456'
+
+SQL_QUERY=$1
+
+if [[ -n "${SQL_QUERY}" ]]; then
+    MYSQL_CMD="${MYSQL_CMD} -e \"${SQL_QUERY}\""
+
+    SELECTED_DB=$2
+
+    if [[ -n "${SELECTED_DB}" ]]; then
+      MYSQL_CMD="${MYSQL_CMD} \"${SELECTED_DB}\""
+    fi
+fi
+
+$DOCKER_CMD exec -ti ${CONTAINER} bash -c "LANG=ru_RU.UTF-8 ${MYSQL_CMD}"