Docker : image Rust + SPA publiée sur GHCR, tirée au démarrage

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LG2LLJuswrrTTPKJmunEVf

.github/workflows/docker-publish.yml

@@ -0,0 +1,44 @@
+name: Image Docker
+
+# Construit l'image à chaque mise à jour de main et la publie sur GHCR :
+# le serveur la récupère au prochain `docker compose up -d` (pull_policy: always).
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+concurrency:
+  group: docker-publish
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: docker/setup-buildx-action@v3
+
+      - uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Nom de l'image (minuscules)
+        id: image
+        run: echo "name=ghcr.io/${GITHUB_REPOSITORY,,}" >> "$GITHUB_OUTPUT"
+
+      - uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: |
+            ${{ steps.image.outputs.name }}:latest
+            ${{ steps.image.outputs.name }}:${{ github.sha }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max