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For some reason, some people don't like command line flags, so they prefer to use something like a



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dot on file, which is a hidden file named DOT EMV, that you specify your your environment variables



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in and go does support that and some people use it.



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I have used it in the past and particularly people that are coming from where it seems to be really,



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really popular and Python as well.



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Some people prefer to use it and the option does exist.



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And here is a repository that will give you that functionality.



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If you don't like command line flags, honestly, if you're going to be working with, say, docker



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images, command line flags, make your life a lot easier.



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You don't have to copy a dot on file in there during the docker build.



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But if you want to use dot on file, you can.



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And here's an example of how you do it.



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So all of the documentation is right here.



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You go get the package and then you just specify a dot on file at the root of your project and give



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it a name equals key or key equals value.



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Name equals value.



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You specify that and it shows you exactly how to read it right here.



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So it's very straightforward.



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And if you want to do that instead of command line flags, it's entirely up to you.