Migrate from Docker to Podman

[Copilot]

Replaces Docker with Podman as the container runtime across all workflows and scripts.

Changes

Scripts

• preview.sh: docker run → podman run

GitHub Actions

• .github/workflows/build.yml: docker run → podman run
• .github/workflows/ci.yml:
  • Renamed docker-job → podman-job
  • Replaced Docker GitHub Actions (docker/login-action, docker/metadata-action, docker/build-push-action) with native Podman CLI commands
  • Added Podman installation step via apt
  • Capture registry digest using podman push --digestfile for attestation support

Example

# Before
- uses: docker/build-push-action@v6
  with:
    push: true
    tags: ${{ steps.meta.outputs.tags }}

# After
- run: |
    podman build -t $REGISTRY/$IMAGE:latest .
    podman push --digestfile /tmp/digest.txt $REGISTRY/$IMAGE:latest

All existing functionality preserved: multi-tag builds, conditional push logic, and artifact attestation.

Original prompt

le projet utilise docker aujourd'hui, peux-tu passer a podman latest ?

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