Docker Repository

One-liner: End-to-end Docker containerization solutions and AWS infrastructure automation for building, deploying, and managing containerized applications in production environments.

Repository Description

This DevSecOps repository provides a complete ecosystem for containerizing applications and automating cloud infrastructure. It combines Docker containerization best practices with Infrastructure as Code (Terraform) for seamless AWS EC2 deployment automation. Designed for teams implementing modern DevSecOps practices.

What You're Trying to Achieve

This repository serves as a unified platform for:

1. Containerization - Build and manage Docker containers with proven Dockerfile patterns
2. Infrastructure Automation - Provision AWS resources programmatically using Terraform
3. DevSecOps Implementation - Secure, automated, and repeatable deployment workflows
4. Best Practices - Industry-standard configurations for production environments
5. Team Collaboration - Documented, version-controlled infrastructure and application containers

Repository Structure

Docker/
├── README.md                    # Repository overview (this file)
├── Dockerfiles/                 # Container image definitions
│   ├── Dockerfile              # Docker image configuration
│   └── Readme.md               # Docker commands & best practices
├── terraform/                   # Infrastructure as Code
│   ├── readme.md               # Terraform setup & deployment guide
│   ├── .gitignore              # Git ignore rules
│   ├── data.tf                 # AWS data sources
│   ├── launch-instance.tf      # EC2 instance provisioning
│   ├── locals.tf               # Local variable definitions
│   ├── outputs.tf              # Infrastructure outputs
│   ├── variables.tf            # Input variables
│   ├── space.sh                # Utility scripts
│   ├── terraform.tfstate       # Infrastructure state (local)
│   └── .terraform.lock.hcl     # Dependency lock file
└── .terraform/                  # Terraform provider cache

Core Workflow

┌─────────────────────────────────────────────────────────┐
│         DEVELOPMENT → BUILD → DEPLOY → MONITOR          │
├─────────────────────────────────────────────────────────┤
│                                                          │
│  1. Dockerfiles/Dockerfile    → Build container images  │
│  2. Dockerfiles/Readme.md     → Reference commands      │
│  3. terraform/                → Provision AWS resources  │
│  4. Deploy to EC2 & Run       → Container execution     │
│                                                          │
└─────────────────────────────────────────────────────────┘

Repository Topics

docker containerization infrastructure-as-code terraform aws ec2 devops devsecops automation cloud-infrastructure iac dockerfile container-images aws-ec2 best-practices docker-containers terraform-aws cloud-deployment infrastructure-automation docker-guide aws-automation ci-cd-pipeline devops-tools cloud-security container-orchestration

Quick Start Guide

Step 1: Build Docker Image

cd Dockerfiles
docker build -t my-app:latest .
docker run -d --name my-container my-app:latest

Refer to Dockerfiles/Readme.md for detailed Docker commands.

Step 2: Provision Infrastructure with Terraform

cd terraform
terraform init
terraform plan
terraform apply

Refer to terraform/readme.md for detailed setup instructions.

Step 3: Deploy Container to Infrastructure

# SSH into EC2 instance (from Terraform outputs)
ssh -i your-key.pem ec2-user@<instance-ip>

# Pull and run your Docker image
docker pull my-app:latest
docker run -d -p 8080:80 --name app my-app:latest

Directory Breakdown

Dockerfiles/

Purpose: Container image definitions and Docker best practices

• Dockerfile - Multi-stage builds, security scanning, optimized layers
• Readme.md - Complete Docker command reference and workflows

Key Tasks:

• Build container images
• Define application environment
• Optimize image size and performance
• Implement security best practices

terraform/

Purpose: Infrastructure automation and cloud resource provisioning

• data.tf - Query existing AWS resources (AMIs, VPCs, subnets)
• launch-instance.tf - EC2 instance configuration and deployment
• variables.tf - Input variables for customization
• locals.tf - Local values for reusability
• outputs.tf - Export important infrastructure details
• readme.md - Complete Terraform documentation
• .gitignore - Exclude sensitive files from version control

Key Tasks:

• Provision EC2 instances
• Configure security groups
• Set up networking
• Manage IAM roles and policies
• Generate outputs for container deployment

Key Features

✅ Containerization

• Production-ready Dockerfile patterns
• Multi-stage builds for optimization
• Security scanning and best practices
• Image optimization and layer caching

✅ Infrastructure Automation

• AWS EC2 provisioning via Terraform
• Security group management
• Network configuration
• Auto-scaling capabilities (extensible)

✅ DevSecOps Integration

• Secure credential management
• State file encryption
• IAM least-privilege principles
• Automated deployment workflows

✅ Documentation

• Comprehensive guides in each module
• Command references and examples
• Best practices and troubleshooting
• Contributing guidelines

Technology Stack

Technology	Purpose
Docker	Container runtime & image management
Dockerfile	Container image definition
Terraform	Infrastructure as Code (IaC)
HCL	Terraform configuration language
AWS	Cloud infrastructure provider
EC2	Virtual machine provisioning
Bash	Scripting and automation
Git	Version control

Complete Workflow Example

# 1. Clone repository
git clone <repository-url>
cd Docker

# 2. Build Docker image
cd Dockerfiles
docker build -t myapp:1.0 .
docker tag myapp:1.0 myapp:latest

# 3. Test container locally
docker run -d -p 8080:80 --name test myapp:latest
curl http://localhost:8080

# 4. Provision AWS infrastructure
cd ../terraform
terraform init
terraform plan -out=tfplan
terraform apply tfplan

# 5. Get EC2 instance details
terraform output instance_ip
terraform output instance_id

# 6. Deploy container to EC2
ssh -i <key-path> ec2-user@<instance-ip>
docker pull myapp:latest
docker run -d -p 80:80 myapp:latest

Use Cases

🐳 Containerize Applications

• Package applications with dependencies
• Ensure consistency across environments
• Enable portable deployments

☁️ Automate AWS Deployments

• Provision infrastructure on-demand
• Reduce manual configuration errors
• Enable disaster recovery

🔄 CI/CD Integration

• Automated build pipelines
• Continuous deployment workflows
• Infrastructure change tracking

🛡️ DevSecOps Implementation

• Secure by default configurations
• Automated security scanning
• Compliance and audit trails

Best Practices Implemented

Docker

• ✓ Minimal base images (Alpine, distroless)
• ✓ Multi-stage builds for smaller images
• ✓ Non-root user execution
• ✓ Layer caching optimization
• ✓ Health checks and signals
• ✓ Security scanning

Terraform

• ✓ State file encryption
• ✓ Remote backend support
• ✓ Variable organization
• ✓ Module structure
• ✓ IAM least-privilege
• ✓ Resource tagging
• ✓ Output management

General

• ✓ Version control best practices
• ✓ Comprehensive documentation
• ✓ Sensitive data exclusion (.gitignore)
• ✓ Reproducible builds
• ✓ Automated deployments

Security Considerations

🔐 Container Security

• Scan images for vulnerabilities
• Use minimal base images
• Run as non-root users
• Limit resource consumption
• Health checks and restart policies

🔐 Infrastructure Security

• Encrypt state files
• Use AWS Secrets Manager
• Implement security groups
• Enable VPC protection
• Audit IAM policies
• Enable CloudTrail logging

🔐 Repository Security

• No hardcoded credentials
• Sensitive files in .gitignore
• Branch protection rules
• Code review process
• Automated security scanning

Getting Started Checklist

• Review Dockerfiles/Readme.md for container basics
• Review terraform/readme.md for infrastructure setup
• Configure AWS credentials (aws configure)
• Build Docker image locally
• Test container with docker run
• Initialize Terraform (terraform init)
• Plan infrastructure (terraform plan)
• Deploy resources (terraform apply)
• Push image to registry (Docker Hub, ECR)
• Monitor deployment and logs

Documentation

Document	Purpose	Location
Main README	Repository overview	/README.md
Docker Guide	Container commands & best practices	/Dockerfiles/Readme.md
Terraform Guide	IaC setup & deployment	/terraform/readme.md
Git Config	Version control rules	/terraform/.gitignore
Lock File	Dependency versions	/terraform/.terraform.lock.hcl

Contributing

1. Create feature branch: git checkout -b feature/description
2. Build and test Docker image locally
3. Run terraform validate and terraform plan
4. Update relevant README files
5. Commit changes with descriptive messages
6. Submit pull request for team review
7. Merge after approval and CI/CD pass

Advanced Topics

Extending the Repository

Add Container Registry:

# Push to Amazon ECR
aws ecr get-login-password | docker login --username AWS --password-stdin <account-id>.dkr.ecr.<region>.amazonaws.com
docker tag myapp:latest <account-id>.dkr.ecr.<region>.amazonaws.com/myapp:latest
docker push <account-id>.dkr.ecr.<region>.amazonaws.com/myapp:latest

Enable Remote Terraform State:

# Add backend.tf to terraform/
terraform {
  backend "s3" {
    bucket         = "terraform-state-bucket"
    key            = "docker/terraform.tfstate"
    region         = "us-east-1"
    encrypt        = true
  }
}

Add Docker Compose:

# For multi-container local development
docker-compose up -d
docker-compose logs -f

Troubleshooting

Docker Issues

• Check logs: docker logs <container-id>
• Verify image: docker inspect <image-id>
• Validate Dockerfile: docker build --progress=plain

Terraform Issues

• Validate syntax: terraform validate
• Refresh state: terraform refresh
• Check state lock: terraform force-unlock <lock-id>

Deployment Issues

• SSH to instance and check Docker daemon
• Verify security group rules
• Check EC2 instance logs in CloudWatch
• Review Terraform outputs

Support & Resources

• Docker Documentation
• Terraform Documentation
• AWS Provider Docs
• AWS EC2 Documentation
• Docker Best Practices
• Terraform Best Practices

Acknowledgments

Built following industry best practices for containerization and infrastructure automation.

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Status: Active Development
Last Updated: March 26, 2026
Maintained By: DevSecOps Team
Version: 1.0.0