[mirotalksfu] - update dockerfile

Dockerfile

@@ -1,22 +1,32 @@
-FROM node:18-slim 
+# Use a lightweight Node.js image
+FROM node:20-slim
 
+# Set working directory
 WORKDIR /src
 
-# https://mediasoup.org/documentation/v3/mediasoup/installation/
+# Set environment variable to skip downloading prebuilt workers
 ENV MEDIASOUP_SKIP_WORKER_PREBUILT_DOWNLOAD="true"
 
+# Install necessary system packages and dependencies
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        build-essential \
+        python3 \
+        python3-pip \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy package.json and install npm dependencies
 COPY package.json .
+RUN npm install
 
-RUN \
+# Cleanup unnecessary packages and files
-    DEBIAN_FRONTEND=noninteractive apt-get update && \
+RUN apt-get purge -y --auto-remove build-essential python3-pip \
-    apt-get install -y --no-install-recommends build-essential python3-pip && \
+&& npm cache clean --force \
-    npm install && \
+&& rm -rf /tmp/* /var/tmp/* /usr/share/doc/*
-    apt-get -y purge --auto-remove build-essential python3-pip && \
-    apt-get install -y --no-install-recommends python3 && \
-    npm cache clean --force && \
-    rm -rf /tmp/* /var/lib/apt/lists/* /var/tmp/* /usr/share/doc/*
 
+# Copy the application code
 COPY app app
 COPY public public
 
-CMD npm start
+# Set default command to start the application
+CMD ["npm", "start"]