Add mysql configuration for 1G ram setup + MySQL 5.7 workaround (#860)

database/Dockerfile

@@ -4,3 +4,5 @@ MAINTAINER jekkos
 ADD database.sql /docker-entrypoint-initdb.d/database.sql
 VOLUME /docker-entrypoint-initdb.d
 
+ADD docker_mysql.cnf /etc/mysql/conf.d/my.cnf
+VOLUME /etc/mysql/conf.d

database/docker_mysql.cnf

@@ -0,0 +1,33 @@
+[mysqld]
+sql_mode = "STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
+
+key_buffer		= 16M
+max_allowed_packet = 1M
+
+tmp-table-size                 = 32M
+max-heap-table-size            = 32M
+query_cache_limit	= 4M
+query_cache_size = 32M
+query_cache_type = ON
+log_slow_queries = OFF
+innodb_buffer_pool_size = 56M
+innodb_log_file_size = 15M
+thread_cache_size = 4
+expire_logs_days	= 10
+max_binlog_size         = 100M
+innodb_file_per_table = 1
+myisam_sort_buffer_size = 8M
+read_rnd_buffer_size = 512K
+net_buffer_length = 8K
+read_buffer_size = 256K
+sort_buffer_size = 4M
+table_cache = 64
+key_buffer_size = 16M
+
+[isamchk]
+key_buffer		= 16M
+write_buffer = 2M
+read_buffer = 2M
+sort_buffer_size = 20M
+key_buffer_size = 20M
+