Failing to start MySQL inside GitHub Actions

Published under Devops.

I recently started running into this error on GitHub Actions out of the blue:

Failed to initialize, mysql service is unhealthy

It turns out, the MySQL docker image had been recently updated to no longer support setting the MYSQL_USER environment variable to root, since there is already a root user created by default.

To get around this issue, all you have to do is choose a different name for your MYSQL_USER:

For reference, this is how I had it setup prior to the change:

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