Import MySQL Dump
Sometimes you just want to import your own MySQL backup file.
This can be done in a very easy way, even without bind-mounting or copying the file into the container. It also does not have to do with dockware, so it would also work in a plain MySQL container.
Run this command, and it will automatically import the backup.sql file from your database folder into your MySQL instance.
docker exec -i shop mysql -uroot -proot shopware < ./database/backup.sql
Copy the backup file into your container. Make sure to place it in the folder /usr/share/adminer
docker cp adminer.sql.gz containerName:/usr/share/adminer/adminer.sql.gz
Now open Adminer in your web browser.
Open the section where you can import a databse dump.
You should now be able to seelct your dump directly in your browser and have Adminer importing it.
Please keep in mind to adjust your database credentials, if you have a custom configuration for that.