chore: add build step in ci

.eslintignore

@@ -0,0 +1 @@
+*/build/*

.github/workflows/lint.yml

@@ -1,4 +1,4 @@
-name: Lint
+name: Build and lint
 
 on:
  pull_request:
@@ -29,6 +29,12 @@ jobs:
    - name: Install
      run: npm run prefrontend && npm run prebackend
 
+   - name: Build frontend
+     run: cd frontend && CI=false npm run build
+
+   - name: Build backend
+     run: cd backend && CI=false npm run build
+
    - name: ESLint
      run: npm run eslint
 

.prettierignore

@@ -1,4 +1,5 @@
 node_modules
 dist
 package-lock.json
-build
+build
+.github