Getting Started with Docker for Developers

Docker has become essential for modern development. Let's get started!

What is Docker?

Docker is a platform for developing, shipping, and running applications in containers.

Basic Commands

``bash

Build an image

docker build -t myapp .

Run a container

docker run -p 3000:3000 myapp

List containers

docker ps
`

Dockerfile Example

`dockerfile
FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 3000
CMD ["npm", "start"]
`

Docker Compose

`yaml
version: '3.8'
services:
web:
build: .
ports:

"3000:3000"

db:
image: postgres:15
``

Conclusion

Docker simplifies deployment and ensures consistency across environments!