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name: docker-deployer description: Guide for deploying applications with Docker. This skill should be used when users want to containerize and deploy their applications.

Docker Deployer

Deploy applications using Docker containers.

When to Use

Use when a user asks to:

• Containerize an application
• Create a Dockerfile
• Deploy with Docker

How to Deploy

Step 1: Create Dockerfile

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

Step 2: Build Image

Copydocker build -t myapp .

Step 3: Run Container

Copydocker run -p 3000:3000 myapp

Step 4: Push to Registry

Copydocker tag myapp registry/myapp:latest
docker push registry/myapp:latest

Step 5: Deploy to Cloud

For AWS ECS, create task definition and service.

Output

• Dockerfile - Container definition
• docker-compose.yml - Multi-container setup (if needed)