Clear instructions for self hosting volks

[godfuture]

Hello guys,
I have been trying to migrate my old sync storage docker environment to this project. But till now I was not able to succeed. Going through the issues I can clearly see that many people have the same issue. Unresolved dependencies. Unclear instructions for configuration.

Normally a docker project works in this way:

1. pull docker container from docker hub or build it yourself
2. configure all required docker parameters
3. start using the software

My specific questions:

1. "Make sure you have Docker installed locally." -> what means locally? How can a docker install not be local?
2. "Copy the contents of mozilla-rust-sdk into top level root dir here." -> where to download the sdk exactly? where is here? docker install directory? container root dir? Why not being more precise here?
3. "If you are using MySQL, adjust the MySQL db credentials in docker-compose.mysql.yml to match your local setup." -> Could someone explain what all these hashes and secrets mean? Should this information be fetched from somewhere? If not, how can I create it my own? Are there any requirements? If its about to create a hash, what hashing type/tool can used?
4. "make docker_start_mysql" -> Why make? Should this build something? Where should this command be executed?

Thanks for every hint or guide which is meant for normal self hosting volks.