What base image did you use in the Dockerfile?

In Dockerfile for applications, I usually use minimal and verified base images to ensure lightweight and security. For example:

• For Node.js applications — the official image node:16-alpine, which is based on Alpine Linux and takes up little space.
• For Python — python:3.9-slim or python:3.9-alpine for compactness.
• For Java — openjdk:11-jre-slim.

Example Dockerfile for Node.js:

FROM node:16-alpine
WORKDIR /app
COPY package*.json ./
RUN npm install --production
COPY . .
CMD ["node", "index.js"]

The choice of base image depends on size requirements, security, and compatibility with the application.