add custom my.cnf to defaults folder

Dockerfile

@@ -24,6 +24,7 @@ rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /var/lib/mysql && \
 mkdir -p /var/lib/mysql
 
 #Adding Custom files
+COPY defaults/ /defaults/
 COPY init/ /etc/my_init.d/
 COPY services/ /etc/service/
 RUN chmod -v +x /etc/service/*/run /etc/my_init.d/*.sh

defaults/my.cnf

@@ -0,0 +1,123 @@
+## custom configuration file, please be aware that changing options here may break things
+
+[mysqld_safe]
+nice		= 0
+
+[mysqld]
+max_connections		= 100
+connect_timeout		= 5
+wait_timeout		= 600
+max_allowed_packet	= 16M
+thread_cache_size       = 128
+sort_buffer_size	= 4M
+bulk_insert_buffer_size	= 16M
+tmp_table_size		= 32M
+max_heap_table_size	= 32M
+
+#
+# * MyISAM
+#
+# This replaces the startup script and checks MyISAM tables if needed
+# the first time they are touched. On error, make copy and try a repair.
+myisam_recover          = BACKUP
+key_buffer_size		= 128M
+#open-files-limit	= 2000
+table_open_cache	= 400
+myisam_sort_buffer_size	= 512M
+concurrent_insert	= 2
+read_buffer_size	= 2M
+read_rnd_buffer_size	= 1M
+#
+# * Query Cache Configuration
+#
+# Cache only tiny result sets, so we can fit more in the query cache.
+query_cache_limit		= 128K
+query_cache_size		= 64M
+# for more write intensive setups, set to DEMAND or OFF
+#query_cache_type		= DEMAND
+#
+# * Logging and Replication
+#
+# Both location gets rotated by the cronjob.
+# Be aware that this log type is a performance killer.
+# As of 5.1 you can enable the log at runtime!
+#general_log_file        = /config/log/mysql/mysql.log
+#general_log             = 1
+#
+# Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf.
+#
+# we do want to know about network errors and such
+log_warnings		= 2
+#
+# Enable the slow query log to see queries with especially long duration
+#slow_query_log[={0|1}]
+slow_query_log_file	= /config/log/mysql/mariadb-slow.log
+long_query_time = 10
+#log_slow_rate_limit	= 1000
+log_slow_verbosity	= query_plan
+
+#log-queries-not-using-indexes
+#log_slow_admin_statements
+#
+# The following can be used as easy to replay backup logs or for replication.
+# note: if you are setting up a replication slave, see README.Debian about
+#       other settings you may need to change.
+#server-id		= 1
+#report_host		= master1
+#auto_increment_increment = 2
+#auto_increment_offset	= 1
+log_bin			= /config/log/mysql/mariadb-bin
+log_bin_index		= /config/log/mysql/mariadb-bin.index
+# not fab for performance, but safer
+#sync_binlog		= 1
+expire_logs_days	= 10
+max_binlog_size         = 100M
+# slaves
+#relay_log		= /config/log/mysql/relay-bin
+#relay_log_index	= /config/log/mysql/relay-bin.index
+#relay_log_info_file	= /config/log/mysql/relay-bin.info
+#log_slave_updates
+#read_only
+#
+# If applications support it, this stricter sql_mode prevents some
+# mistakes like inserting invalid dates etc.
+#sql_mode		= NO_ENGINE_SUBSTITUTION,TRADITIONAL
+#
+# * InnoDB
+#
+# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
+# Read the manual for more InnoDB related options. There are many!
+default_storage_engine	= InnoDB
+# you can't just change log file size, requires special procedure
+#innodb_log_file_size	= 50M
+innodb_buffer_pool_size	= 256M
+innodb_log_buffer_size	= 8M
+innodb_file_per_table	= 1
+innodb_open_files	= 400
+innodb_io_capacity	= 400
+innodb_flush_method	= O_DIRECT
+#
+# * Security Features
+#
+# Read the manual, too, if you want chroot!
+# chroot = /var/lib/mysql/
+#
+# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
+#
+# ssl-ca=/etc/mysql/cacert.pem
+# ssl-cert=/etc/mysql/server-cert.pem
+# ssl-key=/etc/mysql/server-key.pem
+
+[mysqldump]
+quick
+quote-names
+max_allowed_packet	= 16M
+
+[mysql]
+#no-auto-rehash	# faster start of mysql but no tab completition
+
+[isamchk]
+key_buffer_size		= 16M
+
+
+