Update mariadb docker image

50-server.cnf

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+#
+# These groups are read by MariaDB server.
+# Use it for options that only the server (but not clients) should see
+#
+# See the examples of server my.cnf files in /usr/share/mysql
+
+# this is read by the standalone daemon and embedded servers
+[server]
+
+# this is only for the mysqld standalone daemon
+[mysqld]
+
+#
+# * Basic Settings
+#
+user                    = mysql
+pid-file                = /run/mysqld/mysqld.pid
+socket                  = /run/mysqld/mysqld.sock
+#port                   = 3306
+basedir                 = /usr
+datadir                 = /var/lib/mysql
+tmpdir                  = /tmp
+lc-messages-dir         = /usr/share/mysql
+#skip-external-locking
+
+# Instead of skip-networking the default is now to listen only on
+# localhost which is more compatible and is not less secure.
+bind-address            = 0.0.0.0
+
+#
+# * Fine Tuning
+#
+#key_buffer_size        = 16M
+#max_allowed_packet     = 16M
+#thread_stack           = 192K
+#thread_cache_size      = 8
+# This replaces the startup script and checks MyISAM tables if needed
+# the first time they are touched
+#myisam_recover_options = BACKUP
+#max_connections        = 100
+#table_cache            = 64
+#thread_concurrency     = 10
+
+#
+# * Query Cache Configuration
+#
+#query_cache_limit      = 1M
+query_cache_size        = 16M
+
+#
+# * 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       = /var/log/mysql/mysql.log
+#general_log            = 1
+#
+# Error log - should be very few entries.
+#
+log_error = /var/log/mysql/error.log
+#
+# Enable the slow query log to see queries with especially long duration
+#slow_query_log_file    = /var/log/mysql/mariadb-slow.log
+#long_query_time        = 10
+#log_slow_rate_limit    = 1000
+#log_slow_verbosity     = query_plan
+#log-queries-not-using-indexes
+#
+# 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
+#log_bin                = /var/log/mysql/mysql-bin.log
+expire_logs_days        = 10
+#max_binlog_size        = 100M
+#binlog_do_db           = include_database_name
+#binlog_ignore_db       = exclude_database_name
+
+#
+# * Security Features
+#
+# Read the manual, too, if you want chroot!
+#chroot = /var/lib/mysql/
+#
+# For generating SSL certificates you can use for example the GUI tool "tinyca".
+#
+#ssl-ca = /etc/mysql/cacert.pem
+#ssl-cert = /etc/mysql/server-cert.pem
+#ssl-key = /etc/mysql/server-key.pem
+#
+# Accept only connections using the latest and most secure TLS protocol version.
+# ..when MariaDB is compiled with OpenSSL:
+#ssl-cipher = TLSv1.2
+# ..when MariaDB is compiled with YaSSL (default in Debian):
+#ssl = on
+
+#
+# * Character sets
+#
+# MySQL/MariaDB default is Latin1, but in Debian we rather default to the full
+# utf8 4-byte character set. See also client.cnf
+#
+character-set-server  = utf8mb4
+collation-server      = utf8mb4_general_ci
+
+#
+# * 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!
+
+#
+# * Unix socket authentication plugin is built-in since 10.0.22-6
+#
+# Needed so the root database user can authenticate without a password but
+# only when running as the unix root user.
+#
+# Also available for other users if required.
+# See https://mariadb.com/kb/en/unix_socket-authentication-plugin/
+
+# this is only for embedded server
+[embedded]
+
+# This group is only read by MariaDB servers, not by MySQL.
+# If you use the same .cnf file for MySQL and MariaDB,
+# you can put MariaDB-only options here
+[mariadb]
+
+# This group is only read by MariaDB-10.3 servers.
+# If you use the same .cnf file for MariaDB of different versions,
+# use this group for options that older servers don't understand
+[mariadb-10.3]
+

Dockerfile

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+FROM registry.sindominio.net/debian
+
+# Default variables
+ENV HOME_DIR /var/lib/mysql
+ENV MYSQL_DATABASE mysql
+ENV MYSQL_USER mysql
+ENV MYSQL_PASSWORD mysql
+
+RUN apt-get update && \
+    apt-get -qy install mariadb-server default-mysql-client sed &&\
+    apt-get clean
+
+COPY 50-server.cnf /etc/mysql/mariadb.conf.d/50-server.cnf
+
+RUN set -e; \
+	mkdir /var/run/mysqld; \
+	chmod 777 /var/run/mysqld
+
+COPY docker-entrypoint.sh /usr/local/bin/
+
+RUN ["chmod", "+x", "/usr/local/bin/docker-entrypoint.sh"]
+
+VOLUME /var/lib/mysql
+
+EXPOSE 3306
+
+ENTRYPOINT ["docker-entrypoint.sh"]
+
+CMD ["mysqld"]

README.md

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+---
+title: MariaDB Generic
+
+---
+
+Imagen de MariaDB genérica construida sobre la imagen de GNU/Linux Debian del registry de Sindominio.
+
+Crea,
+
+* Base de datos __mysql__
+* Usuaria __mysql__
+* Password __mysql__
+
+Estos valores se pueden modificar a través de variables envolventes:
+
+* MYSQL_DATABASE
+* MYSQL_USER
+* MYSQL_PASSWORD
+
+# Uso en Docker Compose
+
+Configuración en docker-compose.yml
+
+```
+...
+
+services:
+
+  db:
+    image: registry.sindominio.net/mariadb
+    container_name: sd_custom_db
+    restart: always
+    volumes:
+      - dbdata:/var/lib/mysql
+    environment:
+      MYSQL_DATABASE: customdatabase
+      MYSQL_USER: customuser
+      MYSQL_PASSWORD: custompassword
+
+...
+
+```

docker-entrypoint.sh

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+#!/bin/bash
+set -e
+
+mysql_log() {
+	local type="$1"; shift
+	printf '%s [%s] [Entrypoint]: %s\n' "$(date --rfc-3339=seconds)" "$type" "$*"
+}
+
+mysql_note() {
+	mysql_log Note "$@"
+}
+
+docker_change_passw() {
+echo "Creo la base de datos si no existe ${MYSQL_DATABSE}"
+echo "CREATE DATABASE IF NOT EXISTS ${MYSQL_DATABASE}" | mysql -u root
+echo "Reseteo la configuracion de usuario ${MYSQL_USER}"
+echo  "CREATE USER IF NOT EXISTS '${MYSQL_USER}'@'%' IDENTIFIED BY '${MYSQL_PASSWORD}' ; GRANT ALL ON ${MYSQL_DATABASE}.* TO '${MYSQL_USER}'@'%' WITH GRANT OPTION ;"  | mysql -u root
+mysqladmin shutdown
+
+}
+
+docker_temp_server_start() {
+ echo "Arranco temporalmente MariaDB para crear la base de datos ${MYSQL_DATABASE} y el usuario ${MYSQL_USER}"
+ mysqld_safe &
+ sleep 6
+ docker_change_passw
+}
+
+docker_temp_server_start
+
+echo "Iniciando el servidor"
+exec "$@"