FROM mariadb:latest as builder
# That file does the DB initialization but also runs mysql daemon, by removing the last line it will only init
RUN ["sed", "-i", "s/exec \"$@\"/echo \"not running $@\"/", "/usr/local/bin/docker-entrypoint.sh"]
# needed for intialization
ENV MYSQL_ROOT_PASSWORD=root
COPY setup.sql /docker-entrypoint-initdb.d/
# Need to change the datadir to something else that /var/lib/mysql because the parent docker file defines it as a volume.
#
https://docs.docker.com/engine/reference/builder/#volume :
# Changing the volume from within the Dockerfile: If any build steps change the data within the volume after
# it has been declared, those changes will be discarded.
RUN ["/usr/local/bin/docker-entrypoint.sh", "mysqld", "--datadir", "/initialized-db", "--aria-log-dir-path", "/initialized-db"]
FROM mariadb:latest
COPY --from=builder /initialized-db /var/lib/mysql