fix ci: add env vars

Author: aster-void

.github/workflows/static-checks.yaml

@@ -6,6 +6,10 @@ on:
       - main
   pull_request:
 
+env:
+  BASE_URL: http://localhost:3000
+  EXTERNAL_SERVER_PORT: 4000
+
 jobs:
   build:
     name: Build
@@ -15,6 +19,7 @@ jobs:
       - uses: oven-sh/setup-bun@v2
       - run: bun install --frozen-lockfile
       - run: bun run build
+
   biome:
     name: Biome Checks
     runs-on: ubuntu-latest