Make Docker optional and simplify development setup

- Remove Dockerfile.dev and CI/CD workflow
- Remove Docker-specific npm scripts from package.json
- Update README to prioritize local Node.js development
- Make Docker containerization optional rather than required
- Update build scripts to treat Docker as optional
- Remove GitHub Actions and CI/CD references from documentation
- Add Format JSON button to JMESPath toolbar per copilot instructions
- Simplify development workflow for better accessibility

.github/workflows/build-container.yml

@@ -1,114 +0,0 @@
-name: Build Container
-
-on:
-  push:
-    branches: [ main, develop ]
-    paths:
-      - 'src/**'
-      - 'public/**'
-      - 'package*.json'
-      - 'Dockerfile'
-  pull_request:
-    branches: [ main ]
-    paths:
-      - 'src/**'
-      - 'public/**'
-      - 'package*.json'
-      - 'Dockerfile'
-
-env:
-  IMAGE_NAME: jmespath-playground
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - name: Checkout code
-      uses: actions/checkout@v4
-
-    - name: Set up Node.js 24 LTS
-      uses: actions/setup-node@v4
-      with:
-        node-version: '24'
-        cache: 'npm'
-
-    - name: Install dependencies
-      run: npm ci
-
-    - name: Run tests
-      run: npm test -- --coverage --watchAll=false
-
-    - name: Build React application
-      run: npm run build
-
-    - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v3
-
-    - name: Build container image
-      uses: docker/build-push-action@v5
-      with:
-        context: .
-        file: ./Dockerfile
-        push: false
-        load: true
-        tags: ${{ env.IMAGE_NAME }}:latest
-        cache-from: type=gha
-        cache-to: type=gha,mode=max
-
-    - name: Test container
-      run: |
-        # Start the container
-        docker run --rm -d -p 3000:3000 --name test-container ${{ env.IMAGE_NAME }}:latest
-        
-        # Wait for container to be ready
-        echo "Waiting for container to start..."
-        for i in {1..30}; do
-          if curl -f http://localhost:3000 > /dev/null 2>&1; then
-            echo "Container is responding!"
-            break
-          fi
-          if [ $i -eq 30 ]; then
-            echo "Container failed to respond within 30 seconds"
-            docker logs test-container
-            docker stop test-container
-            exit 1
-          fi
-          echo "Attempt $i/30 - waiting..."
-          sleep 2
-        done
-        
-        # Test successful, stop container
-        docker stop test-container
-
-    - name: Upload build artifacts
-      uses: actions/upload-artifact@v4
-      if: success()
-      with:
-        name: build-output
-        path: build/
-        retention-days: 7
-
-  # Optional: Build with multi-platform support for production
-  build-multiplatform:
-    runs-on: ubuntu-latest
-    if: github.ref == 'refs/heads/main'
-    needs: build
-
-    steps:
-    - name: Checkout code
-      uses: actions/checkout@v4
-
-    - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v3
-
-    - name: Build multi-platform image
-      uses: docker/build-push-action@v5
-      with:
-        context: .
-        file: ./Dockerfile
-        platforms: linux/amd64,linux/arm64
-        push: false
-        tags: ${{ env.IMAGE_NAME }}:latest
-        cache-from: type=gha
-        cache-to: type=gha,mode=max