ci(admin-web): Docker build & push vers registry Gitea + reusable tests

- Nouveau Dockerfile multi-stage Next.js standalone (node:22-bookworm-slim)
- Configuration semantic-release (.releaserc.json, version.json, devDeps)
- docker-compose.portainer.yml pour déploiement Portainer
- Workflow docker-admin-web.yml : test → semantic-release → build push → deploy
- Extraction admin-web-tests.yml (reusable workflow) appelé par ci.yml et docker-admin-web.yml → 0 duplication
- next.config.ts : ajout output: 'standalone'
- .dockerignore : exclusions node_modules, .next, etc.

admin-web/package.json

@@ -13,7 +13,8 @@
     "test:e2e": "playwright test",
     "test:e2e:ui": "playwright test --ui",
     "test:e2e:headed": "playwright test --headed",
-    "test:all": "npm run test && npm run test:e2e"
+    "test:all": "npm run test && npm run test:e2e",
+    "semantic-release": "semantic-release"
   },
   "dependencies": {
     "@google/genai": "^1.47.0",
@@ -30,6 +31,10 @@
   },
   "devDependencies": {
     "@playwright/test": "^1.58.2",
+    "@semantic-release/commit-analyzer": "^13.0.0",
+    "@semantic-release/exec": "^6.0.0",
+    "@semantic-release/git": "^10.0.0",
+    "@semantic-release/release-notes-generator": "^14.0.0",
     "@tailwindcss/postcss": "^4",
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",
@@ -42,6 +47,7 @@
     "eslint": "^9",
     "eslint-config-next": "16.1.6",
     "jsdom": "^28.1.0",
+    "semantic-release": "^24.0.0",
     "shadcn": "^3.8.5",
     "tailwindcss": "^4",
     "tw-animate-css": "^1.4.0",