feat: add GitHub Actions CI workflow

Author: bokhtachekhawla

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: Build and Deploy
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Build Docker image
+      run: docker build -t gdg-docs:latest .
+      
+    - name: Test Docker image
+      run: |
+        docker run -d --name test-container -p 8080:8080 gdg-docs:latest
+        sleep 10
+        curl -f http://localhost:8080 || exit 1
+        docker stop test-container