first commit

.docker/db/my.cnf

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+[mysqld]
+character-set-server = utf8mb4
+collation-server = utf8mb4_bin
+
+default-authentication-plugin = mysql_native_password
+
+log-error = /var/log/mysql/mysql-error.log
+
+slow_query_log = 1
+slow_query_log_file = /var/log/mysql/mysql-slow.log
+long_query_time = 5.0
+log_queries_not_using_indexes = 0
+
+general_log = 1
+general_log_file = /var/log/mysql/mysql-query.log
+
+[mysql]
+default-character-set = utf8mb4
+
+[client]
+default-character-set = utf8mb4