This feature is only available in the v4 beta. To upgrade to v4, see the upgrade to v4 docs.
Run the command like this: 
npx trigger.dev@v4-beta preview archive
It will archive the preview branch, automatically detecting the branch name from git. You can manually specify the branch using the --branch option.

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Arguments

npx trigger.dev@v4-beta preview archive [path]
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Project path
[path]
The path to the project. Defaults to the current directory.

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Options

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Preview branch
--branch | -b
When using --env preview the branch is automatically detected from git. But you can manually specify it by using this option, e.g. --branch my-branch or -b my-branch.
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Config file
--config | -c
The name of the config file found at the project path. Defaults to trigger.config.ts
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Project ref
--project-ref | -p
The project ref. Required if there is no config file.
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Env file
--env-file
Load environment variables from a file. This will only hydrate the process.env of the CLI process, not the tasks.
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Skip update check
--skip-update-check
Skip checking for @trigger.dev package updates.

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Common options

These options are available on most commands.
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Login profile
--profile
The login profile to use. Defaults to “default”.
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API URL
--api-url | -a
Override the default API URL. If not specified, it uses https://api.trigger.dev. This can also be set via the TRIGGER_API_URL environment variable.
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Log level
--log-level | -l
The CLI log level to use. Options are debug, info, log, warn, error, and none. This does not affect the log level of your trigger.dev tasks. Defaults to log.
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Skip telemetry
--skip-telemetry
Opt-out of sending telemetry data. This can also be done via the TRIGGER_TELEMETRY_DISABLED environment variable. Just set it to anything other than an empty string.
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Help
--help | -h
Shows the help information for the command.
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Version
--version | -v
Displays the version number of the CLI.