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NP-DK03: Build Image for Go App

Project Overview

Develop a container image for a Go-based recommendation service, leveraging Go's static binary compilation and minimal container footprint.

Service Details​

Service Configuration
{
    "path": "/recommendation",
    "language": "Go",
    "framework": "Native Go",
    "port": 8080,
    "build": "go build -o app",
    "launch": "./app"
}

Technical Requirements​

Prerequisites​

  • Docker installed locally
  • Git for version control
  • Basic Go knowledge
  • IDE or text editor
  • GitHub account
Base Repository

https://github.com/craftista/craftista

Implementation Requirements​

🚀 Go-Specific Considerations​

  • Static binary compilation
  • Go modules management
  • Multi-stage build optimization
  • Small base image selection

🔒 Security Measures​

  • Minimal base image (scratch/alpine)
  • Non-root user execution
  • Least privilege principle
  • Security scanning integration

⚡ Optimization Requirements​

  • Multi-stage build for minimal size
  • Go build flags optimization
  • Layer caching strategy
  • Final binary optimization
Important Considerations
  • Static linking considerations
  • CGO dependencies handling
  • Cross-compilation options
  • Development workflow

Community Learning​

Weekly Schedule​

  • Monday: New project release
  • Thursday: Live Build Session on [YouTube Channel Link]
    • Go containerization demo
    • Best practices discussion
    • Interactive Q&A

Share Your Work​

Join the learning community on r/devopsbuilders:

  • Use "Devops Buildcamp" flair
  • Include PR-DK03 in post title
  • Share your approach
  • Discuss Go containerization
  • Help others learn
Remember

Share your Go containerization journey with the community!

Reference Commands​

Build & Run Commands
# Build the application
go build -o app

# Launch the application
./app

# Default port
8080

Best Practices Implementation Guide​

Go Container Setup​

Example Multi-Stage Structure
# Build stage
FROM golang:1.19 AS builder
WORKDIR /app
COPY go.* ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -o app

# Production stage
FROM scratch
COPY --from=builder /app/app /app
USER nobody
ENTRYPOINT ["/app"]
Pro Tip

Go's ability to create static binaries makes it perfect for creating ultra-small container images!