chore(ci): Configure eslint in CI

.github/workflows/test.yaml

@@ -0,0 +1,41 @@
+name: Test
+
+on:
+  pull_request:
+
+env:
+  IMAGES_HOSTNAME: "*"
+
+jobs:
+  next-lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup node
+        uses: actions/setup-node@v6
+        with:
+          node-version: 22
+          cache: yarn
+          cache-dependency-path: next/yarn.lock
+
+      - name: Install eslint (for easier rebasing, could be added to packages.json later)
+        working-directory: ./next
+        run: yarn add --dev typescript eslint-config-next 'eslint@^9'
+
+      - name: Install dependencies
+        working-directory: ./next
+        run: yarn install --frozen-lockfile
+
+      - name: Running linter
+        working-directory: ./next
+        run: yarn run eslint --output-file ../next-eslint_report.json --format json
+        continue-on-error: true
+
+      - name: Annotate Code Linting Results
+        uses: ataylorme/eslint-annotate-action@v3
+        with:
+          report-json: "next-eslint_report.json"
+          only-pr-files: false
+        continue-on-error: true

eslint.config.mjs

@@ -0,0 +1,16 @@
+import { defineConfig, globalIgnores } from 'eslint/config'
+import nextVitals from 'eslint-config-next/core-web-vitals'
+
+const eslintConfig = defineConfig([
+  ...nextVitals,
+  // Override default ignores of eslint-config-next.
+  globalIgnores([
+    // Default ignores of eslint-config-next:
+    '.next/**',
+    'out/**',
+    'build/**',
+    'next-env.d.ts',
+  ]),
+])
+
+export default eslintConfig

next/Dockerfile.prod

@@ -20,6 +20,7 @@ RUN \
 
 # Rebuild the source code only when needed
 FROM base AS builder
+
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
@@ -70,4 +71,4 @@ ENV HOSTNAME="0.0.0.0"
 CMD ["node", "server.js"]
 
 COPY healthcheck.mjs ./healthcheck.mjs
-HEALTHCHECK --interval=12s --timeout=12s --start-period=30s CMD node healthcheck.mjs
+HEALTHCHECK --interval=12s --timeout=12s --start-period=30s CMD node healthcheck.mjs

next/package.json

@@ -2,6 +2,7 @@
   "private": true,
   "scripts": {
     "dev": "next dev",
+    "lint": "next lint",
     "build": "next build",
     "start": "node .next/standalone/server.js",
     "syncDataModel": "node bin/syncDataModel.js",