Using different environments -- command is erroneous

[AdamWientek]

📚 Subject area/topic

environment variables

📋 Page(s) affected (or suggested, for new content)

https://docs.astro.build/en/guides/environment-variables/#setting-environment-variables

📋 Description of content that is out-of-date or incorrect

In order to use different env-files, current documentation states the following command
"astro dev --mode staging"
where 'staging' refers to an env-file '.env.staging'.

This command does not work. Imho the reason for that bug is the command is not complete.
When changed to
"astro dev -- --mode staging" [in my case prefixed with an "npm run " i now can switch between different env-files via the mode-option.

In Discord you find the same error, see https://discord.com/channels/830184174198718474/1306650092886954107

🖥️ Reproduction in StackBlitz (if reporting incorrect content or code samples)

No response

[ArmandPhilippot]

Thanks for reporting this issue! It is correct for pnpm and yarn, but you're right for npm we need -- before the flag. This matches the syntax used for the other flags (e.g https://docs.astro.build/en/reference/cli-reference/#packagejson-scripts).

So to display a correct version for each package manager what we could do here is use the PackageManagerTabs component for this example (as we already do here https://docs.astro.build/en/guides/environment-variables/#using-the-cli for example).

I will add the help wanted label here so someone can update the example to fix this issue, but feel free to create the PR yourself if you want!