[New Feature] Support SAM 2.1 (#59)

* support sam 2.1

* refine config path and ckpt path

* update README

demo/frontend/frontend.Dockerfile

@@ -0,0 +1,26 @@
+# Stage 1: Build Stage
+FROM node:22.9.0 AS build
+
+WORKDIR /app
+
+# Copy package.json and yarn.lock
+COPY package.json ./
+COPY yarn.lock ./
+
+# Install dependencies
+RUN yarn install --frozen-lockfile
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN yarn build
+
+# Stage 2: Production Stage
+FROM nginx:latest
+
+# Copy built files from the build stage to the production image
+COPY --from=build /app/dist /usr/share/nginx/html
+
+# Container startup command for the web server (nginx in this case)
+CMD ["nginx", "-g", "daemon off;"]