基于MariaDB的自定义RockyLinux码头图像

Question

为了测试目的，我正在尝试基于新发布的MariaDB 构建一个自定义的停靠映像。然而，由于缺少systemd，运行服务、准备初始数据库模式(如设置根密码、导入数据等)似乎很复杂。即使通过python启用systemctl (变通方法)，当遇到systemctl启动mariadb时，构建过程也会停止。

Dockerfile：

FROM rockylinux/rockylinux

# INT
RUN yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm -y
RUN yum install supervisor -y
ADD ./assets/SYS/supervisor.conf /etc/supervisor.conf

# SYS
RUN yum install python2 -y
RUN ln -s /usr/bin/python2 /usr/bin/python
RUN unlink /usr/bin/systemctl
ADD ./assets/SYS/systemctl /usr/bin/systemctl
RUN chmod +x /usr/bin/systemctl

# DBS
RUN yum install mariadb-server -y

# Method 1
RUN systemctl start mariadb
# [ freezes the build process ]

# Method 2
RUN exec /usr/bin/mysqld_safe
# [ runs the service but there is a mysql.sock error ]

# Method 3
RUN exec /usr/libexec/mysqld --defaults-file=/etc/my.cnf --user=root
# [ does not run the service ]

RUN mysql_upgrade -u root --force
RUN mysql -u root -e 'DELETE FROM mysql.user WHERE User="";'
RUN mysql -u root -e 'DELETE FROM mysql.user WHERE User="root" AND Host NOT IN ("localhost", "127.0.0.1", "::1");'
RUN mysql -u root -e 'GRANT ALL PRIVILEGES ON *.* TO root@"%" IDENTIFIED BY "";'
RUN mysql -u root -e 'DROP DATABASE IF EXISTS test;'
RUN mysql -u root -e 'DELETE FROM mysql.db WHERE Db="test" OR Db="test\\_%";'
RUN mysql -u root -e 'FLUSH PRIVILEGES;'
RUN mysql -u root -e 'CREATE DATABASE somedatabase;'
ADD ./assets/DBS/database.sql database.sql
RUN mysql -u root somedatabase < database.sql
RUN unlink database.sql
RUN mysqladmin password "somepassword"
RUN systemctl stop mariadb

EXPOSE 3306

CMD ["supervisord", "-c", "/etc/supervisor.conf"]

supervisor.conf

[program:mariadb]
command=/usr/bin/mysqld_safe --basedir=/usr 
process_name=%(program_name)s_%(process_num)02d
numprocs=1
autostart=true
autorestart=false
startsecs=0
redirect_stderr=true
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0

Answer 1

我不确定python解决方案是否引用了船坞-系统-替换脚本。然后，只剩下一个问题，即单个运行需要服务的“启动”和“停止”。

有一个mysql的工作示例可以显示它的缺省值。https://github.com/gdraheim/docker-systemctl-images/blob/master/centos-lamp-stack.dockerfile