updated challenge 3 reason
@@ -3,3 +3,5 @@ Why using containers to put secrets in is a bad idea
As you can tell by now, you can easily detect any secret that stored within a container. Whether it is an ENV, a file, or another property: if a system can read it, so can a human.
Given it is a best practice to let a container be immutable and versioned, you will often end up with the secret within a container forever, unless you remove it again from the registry.
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+Interesting ENV vars for you to have a look at can be found at this https://github.com/Puliczek/awesome-list-of-secrets-in-environment-variables[list].
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