feat: add CLI image

[JoshuaLicense]

Description

Adds an image template for the CLI application.

Related issue: https://dvsa.atlassian.net/browse/VOL-4801

Before submitting (or marking as "ready for review")

• Does the pull request title follow the conventional commit specification?
• Have you performed a self-review of the code
• Have you have added tests that prove the fix or feature is effective and working
• Did you make sure to update any documentation relating to this change?

[github-actions]

Terraform plan for account: nonprod

Commit: a935977

Plan summary

0 to add, 0 to change, 0 to destroy

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No changes. Your infrastructure matches the configuration.

Terraform has compared your real infrastructure against your configuration
and found no differences, so no changes are needed.