How do I attach file to an issue?

[dhow]

Not sure if I missed anything but I didn't find a way to attach a file, this is the primary purpose for me to pose info to JIRA from command-line, it'd be great if we can attach files.

mew:~ jyeh$ jira-cli --ver
2.2
mew:~ jyeh$ jira-cli update --help
usage: jira-cli update [-h] [--jira-url JIRA_URL] [--format FORMAT]
                       [--oneline] [-v] [-u USERNAME] [-p PASSWORD]
                       [--protocol {soap,rest}] [--comment [ISSUE_COMMENT]]
                       [--priority ISSUE_PRIORITY]
                       [--component ISSUE_COMPONENTS]
                       [--assign ISSUE_ASSIGNEE]
                       [--transition ISSUE_TRANSITION] [--label [LABELS]]
                       [--resolution RESOLUTION] [--fix-version [FIX_VERSION]]
                       [--remove-fix-version [REMOVE_FIX_VERSION]]
                       [--affects-version [AFFECTS_VERSION]]
                       [--remove-affects-version [REMOVE_AFFECTS_VERSION]]
                       [--extra [EXTRA_FIELDS]]
                       issue

positional arguments:
  issue                 the jira issue to act on

optional arguments:
  -h, --help            show this help message and exit
  --jira-url JIRA_URL   the base url for the jira instance
  --format FORMAT       format for displaying ticket information. allowed
                        tokens: status,priority,updated,votes,components,proje
                        ct,reporter,created,fixVersions,summary,environment,as
                        signee,key,affectsVersions,type.Use the % character
                        before each token (example: issue id: %key
                        [%priority])
  --oneline             built in format to display each ticket on one line
  -v                    amount of detail to show for issues
  -u USERNAME, --username USERNAME
                        username to login as
  -p PASSWORD, --password PASSWORD
                        password for jira instance
  --protocol {soap,rest}
                        the protocol to use to communicate with jira
  --comment [ISSUE_COMMENT]
                        add a comment to an existing issue
  --priority ISSUE_PRIORITY, --priority ISSUE_PRIORITY
                        change the priority of an issue
  --component ISSUE_COMPONENTS
                        add components(s) to an issue (use list components to
                        view available components)
  --assign ISSUE_ASSIGNEE
                        assign the issue to a user
  --transition ISSUE_TRANSITION
                        transition the issue to a new state (use list
                        transitions to view available transitions for an
                        issue)
  --label [LABELS]      label to add to the ticket
  --resolution RESOLUTION
                        set the resolution for the issue
  --fix-version [FIX_VERSION]
                        add a version that this issue fixes
  --remove-fix-version [REMOVE_FIX_VERSION]
                        remove a version specified as being fixed by the issue
  --affects-version [AFFECTS_VERSION]
                        add a version that this issue affects
  --remove-affects-version [REMOVE_AFFECTS_VERSION]
                        remove a version specified as being affected by the
                        issue
  --extra [EXTRA_FIELDS]
                        extra fields to update in the ticket