fix(ci/docker): add missing build step

.github/workflows/main-docker.yml

@@ -129,7 +129,6 @@ jobs:
       - name: Set TEST_TAG to lowercase
         run: echo "TEST_TAG=${TEST_TAG,,}" >> $GITHUB_ENV
 
-
       - name: Checkout repository
         uses: actions/checkout@v4
       - uses: pnpm/action-setup@v4
@@ -142,6 +141,9 @@ jobs:
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
 
+      - name: Run the TypeScript build
+        run: pnpm run server:build
+
       - name: Update build info
         run: pnpm run chore:update-build-info