mroonga/docker

Dockerfile for Mroonga

Dockerfile for Mroonga

• Source Dockerfiles for groonga/mroonga

Quick start

You can start Mroonga as

$ sudo docker run -d groonga/mroonga
$ mysql -h <container's ipaddr> -u root

MySQL root account doesn't set any password and isn't limited by connecting host. (This mean root was created by "GRANT ALL ON *.* TO root@'%' WITH GRANT OPTION")

Mount host directory as Mroonga's datadir

Now, we support to mount datadir from host machine like this.

$ sudo docker run -d -v /path/to/datadir:/var/lib/mysql groonga/mroonga

If your /path/to/datadir has ibdata1, container decides using datadir as is. If your /path/to/datadir doesn't have ibdata1, container decides to re-initialize datadir for installing Mroonga.

Supported versions

Currently, groonga/mroonga provides these couples of versions. (tags cannot display all of them..)

For MySQL 5.7

tag	MySQL	Mroonga	Groonga
mysql-5.7-latest, latest	5.7.39	12.06	12.0.6
mysql-5.7.39-12.06	5.7.39	12.06	12.0.6
mysql-5.7.38-12.04	5.7.38	12.04	12.0.4
mysql-5.7.38-12.03	5.7.38	12.03	12.0.3
mysql-5.7.37-12.02	5.7.37	12.02	12.0.2
mysql-5.7.37-12.00	5.7.37	12.00	12.0.0
mysql-5.7.37-11.13	5.7.37	11.13	11.1.3
mysql-5.7.36-11.13	5.7.36	11.13	11.1.3
mysql-5.7.34-11.03	5.7.34	11.03	11.0.3
mysql5734_mroonga1103	5.7.34	11.03	11.0.3
mysql5734_mroonga1102	5.7.34	11.02	11.0.2
mysql5733_mroonga1101	5.7.33	11.01	11.0.1
mysql5733_mroonga1100	5.7.33	11.00	11.0.0
mysql5733_mroonga1011	5.7.33	10.11	10.1.1
mysql5732_mroonga1010	5.7.32	10.10	10.1.0
mysql5729_mroonga1001	5.7.29	10.01	10.0.1
mysql5729_mroonga912	5.7.29	9.12	9.1.2
mysql5728_mroonga909	5.7.28	9.09	9.0.9
mysql5727_mroonga907	5.7.27	9.07	9.0.7
mysql5727_mroonga905	5.7.27	9.05	9.0.5
mysql5726_mroonga904	5.7.26	9.04	9.0.4
mysql5726_mroonga903	5.7.26	9.03	9.0.3
mysql5726_mroonga901	5.7.26	9.01	9.0.2
mysql5725_mroonga900	5.7.25	9.00	9.0.0
mysql5724_mroonga809	5.7.24	8.09	8.0.9
mysql5723_mroonga807	5.7.23	8.07	8.0.7
mysql5723_mroonga806	5.7.23	8.06	8.0.6
mysql5722_mroonga803	5.7.22	8.03	8.0.3
mysql5722_mroonga802	5.7.22	8.02	8.0.2
mysql5721_mroonga801	5.7.21	8.01	8.0.1
mysql5721_mroonga800	5.7.21	8.00	8.0.0
mysql5721_mroonga711	5.7.21	7.11	7.1.1
mysql5720_mroonga710	5.7.20	7.10	7.1.0
mysql5720_mroonga709	5.7.20	7.09	7.0.9
mysql5720_mroonga708	5.7.20	7.08	7.0.8
mysql5719_mroonga707	5.7.19	7.07	7.0.7
mysql5719_mroonga706	5.7.19	7.06	7.0.6
mysql5719_mroonga705	5.7.19	7.05	7.0.5
mysql5718_mroonga704	5.7.18	7.04	7.0.4
mysql5718_mroonga703	5.7.18	7.03	7.0.3
mysql5718_mroonga702	5.7.18	7.02	7.0.2
mysql5717_mroonga701	5.7.17	7.01	7.0.1
mysql5717_mroonga700	5.7.17	7.00	7.0.0
mysql5717_mroonga613	5.7.17	6.13	6.1.5
mysql5716_mroonga611	5.7.16	6.11	6.1.1
mysql5716_mroonga610	5.7.16	6.10	6.1.0
mysql5716_mroonga609	5.7.16	6.09	6.0.9
mysql5715_mroonga608	5.7.15	6.08	6.0.8
mysql5714_mroonga607	5.7.14	6.07	6.0.7
mysql5713_mroonga606	5.7.13	6.06	6.0.5
mysql5713_mroonga605	5.7.13	6.05	6.0.5
mysql5713_mroonga603	5.7.13	6.03	6.0.4
mysql5712_mroonga602	5.7.12	6.02	6.0.2
mysql5711_mroonga601	5.7.11	6.01	6.0.1
mysql5711_mroonga600	5.7.11	6.00	6.0.0
mysql5711_mroonga512	5.7.11	5.12	5.1.2
mysql5710_mroonga511	5.7.10	5.11	5.1.1
mysql5710_mroonga510	5.7.10	5.10	5.1.0
mysql579_mroonga509	5.7.9	5.09	5.0.9

For MySQL 8.0

tag	MySQL	Mroonga	Groonga
mysql-8.0-latest	8.0.30	12.06	12.0.6
mysql-8.0.30-12.06	8.0.30	12.06	12.0.6
mysql-8.0.29-12.04	8.0.29	12.04	12.0.4
mysql-8.0.29-12.03	8.0.29	12.03	12.0.3
mysql-8.0.28-12.02	8.0.28	12.02	12.0.2
mysql-8.0.28-12.00	8.0.28	12.00	12.0.0
mysql-8.0.28-11.13	8.0.28	11.13	11.1.3
mysql-8.0.27-11.13	8.0.27	11.13	11.1.3
mysql-8.0.25-11.03	8.0.25	11.03	11.0.3
mysql8025_mroonga1103	8.0.25	11.03	11.0.3
mysql8025_mroonga1102	8.0.25	11.02	11.0.2
mysql8023_mroonga1101	8.0.23	11.01	11.0.1
mysql8023_mroonga1100	8.0.23	11.00	11.0.0
mysql8023_mroonga1011	8.0.23	10.11	10.1.1
mysql8022_mroonga1010	8.0.22	10.10	10.1.0
mysql8019_mroonga1001	8.0.19	10.01	10.0.1
mysql8019_mroonga912	8.0.18	9.12	9.1.2
mysql8018_mroonga909	8.0.18	9.09	9.0.9
mysql8017_mroonga907	8.0.17	9.07	9.0.7
mysql8017_mroonga905	8.0.17	9.05	9.0.5
mysql8016_mroonga904	8.0.16	9.04	9.0.4

For MySQL 5.6

EOL

tag	MySQL	Mroonga	Groonga
mysql56-latest	5.6.50	10.10	10.1.0
mysql5650_mroonga1010	5.6.50	10.10	10.1.0
mysql5647_mroonga1001	5.6.47	10.01	10.0.1
mysql5647_mroonga912	5.6.47	9.12	9.1.2
mysql5646_mroonga909	5.6.46	9.09	9.0.9
mysql5645_mroonga907	5.6.45	9.07	9.0.7
mysql5645_mroonga905	5.6.45	9.05	9.0.5
mysql5644_mroonga904	5.6.44	9.04	9.0.4
mysql5644_mroonga903	5.6.44	9.03	9.0.3
mysql5644_mroonga901	5.6.44	9.01	9.0.2
mysql5643_mroonga900	5.6.43	9.00	9.0.0
mysql5642_mroonga809	5.6.42	8.09	8.0.9
mysql5641_mroonga807	5.6.41	8.07	8.0.7
mysql5641_mroonga806	5.6.41	8.06	8.0.6
mysql5640_mroonga803	5.6.40	8.03	8.0.3
mysql5640_mroonga802	5.6.40	8.02	8.0.2
mysql5639_mroonga801	5.6.39	8.01	8.0.1
mysql5639_mroonga800	5.6.39	8.00	8.0.0
mysql5639_mroonga711	5.6.39	7.11	7.1.1
mysql5638_mroonga710	5.6.38	7.10	7.1.0
mysql5638_mroonga709	5.6.38	7.09	7.0.9
mysql5638_mroonga708	5.6.38	7.08	7.0.8
mysql5637_mroonga707	5.6.37	7.07	7.0.7
mysql5637_mroonga706	5.6.37	7.06	7.0.6
mysql5637_mroonga705	5.6.37	7.05	7.0.5
mysql5636_mroonga704	5.6.36	7.04	7.0.4
mysql5636_mroonga703	5.6.36	7.03	7.0.3
mysql5636_mroonga702	5.6.36	7.02	7.0.2
mysql5635_mroonga701	5.6.35	7.01	7.0.1
mysql5635_mroonga700	5.6.35	7.00	7.0.0
mysql5635_mroonga613	5.6.35	6.13	6.1.5
mysql5635_mroonga611	5.6.35	6.11	6.1.1
mysql5634_mroonga610	5.6.34	6.10	6.1.0
mysql5634_mroonga609	5.6.34	6.09	6.0.9
mysql5633_mroonga608	5.6.33	6.08	6.0.8
mysql5632_mroonga607	5.6.32	6.07	6.0.7
mysql5631_mroonga606	5.6.31	6.06	6.0.5
mysql5631_mroonga605	5.6.31	6.05	6.0.5
mysql5631_mroonga603	5.6.31	6.03	6.0.4
mysql5630_mroonga602	5.6.30	6.02	6.0.2
mysql5629_mroonga601	5.6.29	6.01	6.0.1
mysql5629_mroonga600	5.6.29	6.00	6.0.0
mysql5628_mroonga512	5.6.28	5.12	5.1.2
mysql5628_mroonga511	5.6.28	5.11	5.1.1
mysql5628_mroonga510	5.6.28	5.10	5.1.0
mysql5627_mroonga509	5.6.27	5.09	5.0.9
mysql5627_mroonga508	5.6.27	5.08	5.0.8
mysql5626_mroonga506	5.6.26	5.06	5.0.6
mysql5623_mroonga410	5.6.23	4.10	4.1.1

How to build Mroonga image

• Dockerfile for some couples of MySQL and Mroonga are under "Dockerfile" directory.

$ git clone https://github.com/mroonga/docker mroonga_docker
$ cd mroonga_docker
$ sudo docker build -t mysql57-mroonga mysql57
$ sudo docker build -t mysql80-mroonga mysql80

How to test

$ git clone https://github.com/mroonga/docker mroonga_docker
$ cd mroonga_docker
$ test/build.sh mysql57
$ test/build.sh mysql80

How to release

$ ./update.sh ${MYSQL_VERSION} ${MROONGA_VERSION} ${GROONGA_VERSION}
(./update.sh 5.7.26 9.04 9.0.4)
$ git push
$ git push --tags

Contribution

• Patches welcome both test-script and Dockerfile.

docker's Issues

Update the version above 10.03 as soon as possible. There are serious bugs in 10.03

After the release of mroonga version 11.03, there was a serious bug. There was a syntax parsing error in testing special characters

No version supports MariaDB

I can't find any mroonga images that support MariaDB. The official installation methods of MariaDB and mroonga have encountered obvious problems. No more information could be found

[Question] What's the proper way to initialize DB automatically?

I want to initialize the schema of Mroonga DB with SQL files. MySQL and PostgreSQL images read /docker-entrypoint-initdb.d directory on the first boot and if there are .sql files there, they automatically run the files. I want to do the same thing with this Mroonga image. Is there any way to achieve that?

Test for MySQL 5.6 series fails when MySQL > 8.0 is installed.

Because mysqladmin client has incompatibility of handling shutdown sub-command between 5.6 and 8.0.

        ok 5 - Exist table which has been created at last running
mysqladmin: shutdown failed; error: 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'shutdown' at line 1'
        not ok 6 - Restore mounted directorie's owner
        #   Failed test 'Restore mounted directorie's owner'
        #   at ./build.pl line 176.
        #     Structures begin differing at:
        #          $got->[0] = '1000'
        #     $expected->[0] = '27'
        1..6
        # Looks like you failed 1 test of 6.
    not ok 5 - Running with re-use mounted volume
    #   Failed test 'Running with re-use mounted volume'
    #   at ./build.pl line 177.
    1..5
    # Looks like you failed 1 test of 5.
not ok 1 - Build and Test /home/yoku0825/git/mroonga_docker/test/../Dockerfile/mysql5643_mroonga900
#   Failed test 'Build and Test /home/yoku0825/git/mroonga_docker/test/../Dockerfile/mysql5643_mroonga900'
#   at ./build.pl line 178.

Reference(Japanese only)
日々の覚書: MySQL 5.7, MySQL 8.0 でちょっとだけmysqladmin shutdownが変わる

Change MySQL's default charset utf8mb4

• Add a my.cnf into build directory.
  • How to maintain that?
    • Maybe that doesn't need to maintain..

Test script expects mroonga_libgroonga_version is same as mroonga_version

• Currently, test script expects mroonga_libgroonga_version is same as mroonga_version.
  • Expected version number is generated from directory name.
  • https://github.com/mroonga/docker/blob/master/test/build.pl#L113-L117
• But Groonga and Mroonga don't have same version completely.
  • For example, Mroonga 4.10 and Groonga 4.1.1 is right couple at 2015/01/29's release.

Test script is written by Perl5

But I can't maintain any other language :(
Is there anyone can help me?

Using tag for new autobuild manner in Docker Hub

Docker - I have issues triggering Autobuilds

• Sample

mysql-8.0.29-12.04 が期待通りに動作しない

こんにちは。
mysql-8.0.29-12.04 を試したところ、通常は初回起動時に行われる設定が行われず、mroonga が有効になりませんでした。

$ docker run --rm groonga/mroonga:mysql-8.0.29-12.04

2022-06-22 04:21:34+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.29-1debian10 started.
2022-06-22 04:21:34+00:00 [Note] [Entrypoint]: Switching to dedicated user 'mysql'
2022-06-22 04:21:34+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.29-1debian10 started.

通常であればデータベースが存在しないため、初期化の処理が走り、そこで「MYSQL_ROOT_PASSWORD が設定されていない」など、いろんなチェックにひっかかるはずなのですが、何も表示されません。

調べたところ、mysql-8.0.29-12.04 の Dockerfile で mysql-community-8.0-mroonga がインストールされたときに、すでに /var/lib/mysql の中身が作成されていました。
このため新しい volume を /var/lib/mysql に設定しても、もともとの /var/lib/mysql の内容が volume にコピーされるので初期設定の処理が実行されませんでした。

$ docker run --rm -v vol1:/var/lib/mysql groonga/mroonga:mysql-8.0.29-12.04

nocopy を付けるとコピーが行われないのでうまく動作しました。(これを調べるまで、デフォルトでコピーされることを知りませんでした...)

$ docker run --rm -v vol1:/var/lib/mysql:nocopy groonga/mroonga:mysql-8.0.29-12.04

また、古いバージョンのタグの mysql-8.0.28-12.02 は正常に動作しましたが、MySQL のバージョンが 8.0.28 ではなく、5.7.37 でした。

Support to put datadir is out of container (mounted from host)

Currently, container includes datadir at its own space and initialize it in Dockerfile.
Put initialization phase at docker run for support mounting datadir from host.

About my.cnf permissions

お世話になっております。日本語で失礼します。

Windows の Vagrant 上において、 docker-compose で独自の my.cnf をコピーしてビルドした際に、my.cnf のパーミッションが 777 となり下記のエラーが発生します。

Warning: World-writable config file '/etc/my.cnf' is ignored

当プロジェクトのコンテナが問題ということではなく、他のMySQL系のコンテナでも同様に発生する問題ではあります。
また、Windows 限定の問題であり、Mac や Linux など他の OS では発生しない問題です。

当方の環境では、下記のように my.cnf のパーミッションを 644 に設定し直す docker-compose 用の Dockerfile を用意して問題を回避しています。

ARG MROONGA_VERSION=latest
FROM groonga/mroonga:${MROONGA_VERSION}

LABEL maintainer="NABOO Inc."

COPY my.cnf /etc/my.cnf
RUN chmod 644 /etc/my.cnf

ご報告まで。

mroonga_command() 等の関数が初期状態で利用できない

DBのボリュームを削除して初期化した状態で起動します。

docker volume rm hoge

docker run -e MYSQL_ALLOW_EMPTY_PASSWORD=1 --rm -v hoge:/var/lib/mysql:nocopy groonga/mroonga:mysql-8.0-latest

起動した mysql に接続して mroonga_command() を呼び出そうとすると No database selected というエラーになりました。

mysql> SELECT mroonga_command('status');
ERROR 1046 (3D000): No database selected

/usr/share/mroonga/update.sql に CREATE FUNCTION で mroonga_command() 関数を登録する処理が書かれてることがわかったので、実行してみると mroonga_command() 関数が使えるようになりましたが、これは意図的な動作でしょうか?

mysql> \. /usr/share/mroonga/update.sql
Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 0 rows affected (0.01 sec)

mysql> SELECT mroonga_command('status');
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| mroonga_command('status')





                                     |
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 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|
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

レスポンスが16進数になっているのは不思議ですが、デコードすると読むことはできました。

Change the default timezone, will cause an error.

Hello, @yoku0825

Change the default timezone, will cause an error.

Mroonga container is started with the following configuration using docker-compose.

Dockerfile

ARG MROONGA_VERSION=latest
FROM groonga/mroonga:${MROONGA_VERSION}

LABEL maintainer="NABOO Inc. <[email protected]>"

COPY my.cnf /etc/my.cnf

Customized my.cnf

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html

[client]
default-character-set=utf8mb4

[mysql]
default-character-set=utf8mb4

[mysqldump]
default-character-set=utf8mb4

[mysqld]
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

#log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

### Added by yoku0825
character_set_server= utf8mb4
#loose-validate_password   = OFF

### Added by naboo-nishihara
skip-character-set-client-handshake
collation-server=utf8mb4_general_ci
init-connect=SET NAMES utf8mb4
innodb_ft_min_token_size=1
ft_min_word_len=1
ngram_token_size=1
default-time-zone='Asia/Tokyo'

Mroonga container is exited by the following error.

$ docker-compose logs mroonga
Attaching to laradock_mroonga_1
mroonga_1              | 2018-10-02T01:44:27.691483Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
mroonga_1              | 2018-10-02T01:44:27.693723Z 0 [Note] /usr/sbin/mysqld (mysqld 5.7.23) starting as process 13 ...
mroonga_1              | 2018-10-02T01:44:27.698246Z 0 [Note] InnoDB: PUNCH HOLE support available
mroonga_1              | 2018-10-02T01:44:27.698269Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
mroonga_1              | 2018-10-02T01:44:27.698277Z 0 [Note] InnoDB: Uses event mutexes
mroonga_1              | 2018-10-02T01:44:27.698284Z 0 [Note] InnoDB: GCC builtin __sync_synchronize() is used for memory barrier
mroonga_1              | 2018-10-02T01:44:27.698291Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3
mroonga_1              | 2018-10-02T01:44:27.698299Z 0 [Note] InnoDB: Using Linux native AIO
mroonga_1              | 2018-10-02T01:44:27.698786Z 0 [Note] InnoDB: Number of pools: 1
mroonga_1              | 2018-10-02T01:44:27.699053Z 0 [Note] InnoDB: Using CPU crc32 instructions
mroonga_1              | 2018-10-02T01:44:27.701648Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
mroonga_1              | 2018-10-02T01:44:27.713776Z 0 [Note] InnoDB: Completed initialization of buffer pool
mroonga_1              | 2018-10-02T01:44:27.717205Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
mroonga_1              | 2018-10-02T01:44:27.729241Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
mroonga_1              | 2018-10-02T01:44:27.747822Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
mroonga_1              | 2018-10-02T01:44:27.748056Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
mroonga_1              | 2018-10-02T01:44:27.784621Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
mroonga_1              | 2018-10-02T01:44:27.785699Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
mroonga_1              | 2018-10-02T01:44:27.785719Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active.
mroonga_1              | 2018-10-02T01:44:27.786306Z 0 [Note] InnoDB: Waiting for purge to start
mroonga_1              | 2018-10-02T01:44:27.836495Z 0 [Note] InnoDB: 5.7.23 started; log sequence number 2589159
mroonga_1              | 2018-10-02T01:44:27.836988Z 0 [Note] Plugin 'FEDERATED' is disabled.
mroonga_1              | 2018-10-02T01:44:27.836989Z 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool
mroonga_1              | 2018-10-02T01:44:27.839622Z 0 [Note] InnoDB: Buffer pool(s) load completed at 181002 10:44:27
mroonga_1              | 2018-10-02T01:44:27.852454Z 0 [Warning] unknown variable 'loose-validate_password=OFF'
mroonga_1              | 2018-10-02T01:44:27.853095Z 0 [Note] Salting uuid generator variables, current_pid: 13, server_start_time: 1538444667, bytes_sent: 0, 
mroonga_1              | 2018-10-02T01:44:27.853170Z 0 [Note] Generated uuid: 'b2d83e5a-c5e4-11e8-b2f0-0242ac130006', server_start_time: 3659176235683208, bytes_sent: 61363488
mroonga_1              | 2018-10-02T01:44:27.853187Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: b2d83e5a-c5e4-11e8-b2f0-0242ac130006.
mroonga_1              | 2018-10-02T01:44:27.855110Z 0 [Warning] Failed to set up SSL because of the following SSL library error: SSL context is not usable without certificate and private key
mroonga_1              | 2018-10-02T01:44:27.855383Z 0 [Note] Server hostname (bind-address): '*'; port: 3306
mroonga_1              | 2018-10-02T01:44:27.855430Z 0 [Note] IPv6 is available.
mroonga_1              | 2018-10-02T01:44:27.855447Z 0 [Note]   - '::' resolves to '::';
mroonga_1              | 2018-10-02T01:44:27.855557Z 0 [Note] Server socket created on IP: '::'.
mroonga_1              | 2018-10-02T01:44:27.867283Z 0 [ERROR] Fatal error: Illegal or unknown default time zone 'Asia/Tokyo'
mroonga_1              | 2018-10-02T01:44:27.867320Z 0 [ERROR] Fatal error: Failed to initialize ACL/grant/time zones structures or failed to remove temporary table files.
mroonga_1              | 2018-10-02T01:44:27.867417Z 0 [ERROR] Aborting

Question

If include the following code in the Dockerfile of this project, will not cause an error?

RUN /usr/bin/mysql_tzinfo_to_sql /usr/share/zoneinfo > ~/timezone.sql && ¥
mysql -u root -p mysql < ~/timezone.sql

There is no repository of Mroonga 806 in Docker Hub.

https://hub.docker.com/r/groonga/mroonga/

Are you planning to create the following repositories?
mysql5641_mroonga806
mysql5723_mroonga806

Is latest tag the Mroonga 803?