feat: add Docker support and enhance environment configuration

- Introduce .dockerignore for Docker build optimization
- Add Dockerfile for containerization setup
- Update .env.example to clear Sentry variables and rename HOST to TELEGRAM_HOST
- Modify astro.config.mjs to conditionally exclude SSR dependencies in Docker builds
- Adjust postinstall script to safely handle missing .git directory
- Refactor telegram host retrieval for clarity and consistency

package.json

@@ -12,13 +12,11 @@
     "astro": "astro",
     "lint": "eslint .",
     "lint:fix": "eslint . --fix",
-    "postinstall": "simple-git-hooks"
+    "postinstall": "test -d .git && simple-git-hooks || true"
   },
   "dependencies": {
     "@astrojs/rss": "^4.0.7",
     "@sentry/astro": "^8.26.0",
-    "astro": "^4.14.5",
-    "astro-seo": "^0.8.4",
     "cheerio": "1.0.0-rc.12",
     "dayjs": "^1.11.13",
     "flourite": "^1.3.0",
@@ -35,7 +33,9 @@
     "@astrojs/node": "^8.3.3",
     "@astrojs/vercel": "^7.8.0",
     "@types/prismjs": "^1.26.4",
+    "astro": "^4.14.5",
     "astro-eslint-parser": "^1.0.2",
+    "astro-seo": "^0.8.4",
     "autoprefixer": "^10.4.20",
     "cssnano": "^7.0.5",
     "eslint": "9.5.0",