setup-feint

Run Terraform, OpenTofu or the official Scaleway, Outscale and Exoscale CLIs in GitHub Actions against a local emulator — no cloud account, no credentials, nothing billed.

- uses: stephrobert/setup-feint@v1
  with:
    version: 0.9.0
    provider: scaleway      # exports what the official client needs

- run: terraform apply -auto-approve

That job has no secret, because there is no account to authenticate to. The provider that applies is the real one from the registry; Feint emulates the API it talks to.

What it does

1. Downloads the released binary for the runner's platform.
2. Verifies its checksum before running it — the bytes are checked against the release's checksums.txt, not trusted because they came over HTTPS.
3. Starts the emulator through feint start, which detaches and waits until it answers rather than sleeping and hoping.
4. With provider:, exports the environment that client needs, so the next step needs no configuration at all.

Inputs

Input	Required	Default	What it is
version	yes	—	The release to install, without the leading v (for example 0.9.0). Named rather than defaulted to latest: a mutable reference installs whatever is newest, which is a binary nobody can name afterwards
addr	no	127.0.0.1:4599	Where the emulator listens
provider	no	—	scaleway, outscale or exoscale: exports that client's environment into the job

Outputs

Output	What it is
endpoint	The URL the emulator answers on

The other two doors

This action is for a job that does not already run in containers. If yours does, the OCI image is the shorter path:

services:
  feint:
    image: ghcr.io/stephrobert/feint:v0.9.0
    ports: ["4599:4599"]

And from a Go test, feinttest starts the image and cleans it up, with no dependency added to your module.

What it does not do

The action starts the control plane. Real machines behind --vm need Incus on the host — a GitHub-hosted runner can do it, but that is a different setup and this action does not pretend otherwise. What each mode proves is written row by row in docs/confidence.md.

Source

The action's body lives in the Feint repository and is mirrored here on release, so there is one source and one CI. Report issues there.

Apache-2.0.