Docker 설정 파일 구조 개선 및 .vite 폴더 추적 제거

- .dockerignore 및 docker-compose.yml을 docker/ 디렉토리로 이동
- Makefile의 docker-compose 명령어 경로 업데이트
- .vite/ 폴더를 git 추적에서 제거

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

docker/Dockerfile.dev

@@ -0,0 +1,35 @@
+# Development Dockerfile for hot reloading
+# Multi-platform support for AMD64 and ARM64
+FROM --platform=$TARGETPLATFORM node:18-alpine
+
+# Set working directory
+WORKDIR /app
+
+RUN corepack enable
+
+# Copy package files
+COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* ./
+
+RUN \
+  if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
+  elif [ -f package-lock.json ]; then npm ci; \
+  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i --frozen-lockfile; \
+  else echo "Lockfile not found." && exit 1; \
+  fi
+
+# Install all dependencies (including dev dependencies)
+RUN \
+  if [ -f yarn.lock ]; then yarn run build; \
+  elif [ -f package-lock.json ]; then npm run build; \
+  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm run build; \
+  else echo "Lockfile not found." && exit 1; \
+  fi
+
+# Copy source code
+COPY . .
+
+# Expose development port
+EXPOSE 5173
+
+# Start development server
+CMD ["pnpm", "run", "dev"]