chore: added GitHub Actions CI/CD workflows

.github/workflows/ci.yml

@@ -0,0 +1,44 @@
+# =============================================================================
+# CI Workflow - Continuous Integration
+# Runs on all PRs and pushes to main
+# =============================================================================
+
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+# Cancel in-progress runs when a new commit is pushed
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  # ---------------------------------------------------------------------------
+  # Lint and Build
+  # ---------------------------------------------------------------------------
+  ci:
+    name: Lint & Build
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run ESLint
+        run: npm run lint
+
+      - name: Build application
+        run: npm run build

.github/workflows/docker.yml

@@ -0,0 +1,65 @@
+# =============================================================================
+# Docker Build Workflow
+# Verifies the Docker image builds successfully
+# =============================================================================
+
+name: Docker Build
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - "Dockerfile"
+      - "docker-compose.yml"
+      - ".dockerignore"
+      - "package.json"
+      - "package-lock.json"
+      - "next.config.ts"
+      - "app/**"
+      - "components/**"
+      - "public/**"
+      - "styles/**"
+      - ".github/workflows/docker.yml"
+  pull_request:
+    branches: [main]
+    paths:
+      - "Dockerfile"
+      - "docker-compose.yml"
+      - ".dockerignore"
+      - "package.json"
+      - "package-lock.json"
+      - "next.config.ts"
+      - "app/**"
+      - "components/**"
+      - "public/**"
+      - "styles/**"
+      - ".github/workflows/docker.yml"
+
+# Cancel in-progress runs when a new commit is pushed
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  # ---------------------------------------------------------------------------
+  # Build Docker Image
+  # ---------------------------------------------------------------------------
+  docker-build:
+    name: Build Docker Image
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: false
+          tags: gpkweb:test
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

Dockerfile

@@ -1,6 +1,6 @@
 # =============================================================================
 # Dockerfile for GPK Website (Next.js)
-# Uses multi-stage build for optimized production images (293 MB)
+# Uses multi-stage build for optimized production images
 # =============================================================================
 
 # -----------------------------------------------------------------------------

README.md

@@ -89,8 +89,9 @@ npm run start
   - `fix/mobile-view-bug`
   - `chore/docker-setup`
 - Open a Pull Request into `main`.
+- GitHub Actions CI/CD runs and must pass checks.
 - At least 1 teammate review required before merge.
-- Use squash merge for clean history.
+- Use squash merge to main for clean history.
 
 ## Commit Convention
 
@@ -110,6 +111,7 @@ Follow this commit style (examples provided):
 ├── public/                # Static assets
 ├── styles/                # Global/component styles
 ├── .github/               # GitHub templates/workflows
+│   └── workflows/         # CI/CD pipelines
 ├── Dockerfile             # Production container
 ├── docker-compose.yml     # Local Docker setup
 ├── .dockerignore          # Docker build exclusions
@@ -163,8 +165,16 @@ Open [http://localhost:3000](http://localhost:3000)
 
 ## Infrastructure
 
-- Docker files at repository root (`Dockerfile`, `.dockerignore`, `docker-compose.yml`)
-- CI/CD workflows under `.github/workflows/`
+### CI/CD Workflows
+
+GitHub Actions workflows run automatically:
+
+| Workflow        | Trigger                                       | What it does                |
+|-----------------|-----------------------------------------------|---------------------------- |
+| **CI**          | PRs and pushes to `main`                      | Runs lint and build         |
+| **Docker Build**| PRs/pushes affecting app code or Docker files | Verifies Docker image builds|
+
+View workflow runs: [Actions tab](https://github.com/GraphicsProgrammingKnights/gpkweb/actions)
 
 ## License