The demo staging file ships with this:
vars:
standardPassword: "${DEMO_SHOP_PASSWORD:-secret_sauce}"Two questions. What is the :- part, and why is a key called standardPassword allowed to carry a literal password as a fallback when a plain password: secret_sauce is rejected?
Accepted answer
${VAR:-default} uses the default when the variable is absent from both the dotenv layer and the process environment. Without the :- an absent variable is a hard error; with it, resolution just falls through.
And yes, the secret check accepts it. The rule is that the value must be exactly one ${...} reference and nothing else — a reference with a default still is one. The check is about not committing a value under a name that looks like a credential; it does not try to be a static analysis of what the default happens to be.
It is only defensible in the demo because the target is a public sandbox and the fallback is that site's published password. For anything real, drop the default: you want the loud failure on a machine where the variable is missing, not a silent run against the wrong credential.
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