How to migrate MySQL data directory in docker container?

Question

I have a docker container running MySQL-5.5 with host data volume. I am upgrading my container to MySQL-5.6. I am starting a new container with the same host volume. MySQL was c

Answer 1

You could start MySQL using the 5.5 image and run mysqldump against it

docker run --rm --link mysqld mysql:5.5 \
       mysqldump -h mysqld --all-databases > /your/host/machine/

And then start a new container using the 5.6 image and initialize it using the SQL dump

docker run -v /data/your_dump.sql:/docker-entrypoint-initdb.d/dump.sql mysql:5.6