wordpress-dev/mysql/Dockerfile

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 MARIADB_ROOT_PASSWORD=zmKHxWvm3zWK6h69ZJHk

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"]

# RUN ls -lah /initialized-db

# FROM mariadb:latest
# ENV MARIADB_ROOT_PASSWORD=zmKHxWvm3zWK6h69ZJHk
# COPY --from=builder /initialized-db /var/lib/mysql