# vim:set ft=dockerfile:
FROM alpine:latest

RUN \
    addgroup -S mysql \
    && adduser -S -h /var/lib/mysql -H -D -G mysql mysql \
    && mkdir /docker-entrypoint-initdb.d \
    && apk --no-cache add \
        bash \
        mariadb \
        mariadb-client \
        pwgen \
        socat \
        su-exec \
        tzdata \
    # comment out any "user" entires in the MySQL config
    # ("docker-entrypoint.sh" or "--user" will handle user switching)
	&& sed -ri 's/^user\s/#&/' /etc/mysql/my.cnf \
    # increase innodb buffer pool size
    && sed -i 's/^#innodb_buffer_pool_size = 16M/innodb_buffer_pool_size = 30M/' /etc/mysql/my.cnf \
    # purge and re-create /var/lib/mysql with appropriate ownership
	&& rm -rf /var/lib/mysql && mkdir -p /var/lib/mysql /run/mysqld \
	&& chown -R mysql:mysql /var/lib/mysql /run/mysqld \
    # ensure that /run/mysqld (used for socket and lock files) is writable
    # regardless of the UID our mysqld instance ends up having at runtime
	&& chmod 777 /run/mysqld \
    # don't reverse lookup hostnames, they are usually another container
	&& sed -i 's/\[mysqld\]/[mysqld]\nskip-host-cache/' /etc/mysql/my.cnf

COPY docker-entrypoint.sh /usr/local/bin/
ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
CMD ["mysqld"]