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  • Continuous integration
  • Containerization
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  • 5 Beaumont Parade
    West Footscray VIC 3012
  • (03) 9000 0355
  • 0483 960 723

We acknowledge the Wurundjeri people of the Kulin Nation as the Traditional Custodians of the land on which we operate. We pay our respects to Elders past, present and emerging.

We are an inclusive agency and proud ally of the LGBTQ+ community.

© 2025 Rubix Studios Pty. Ltd. | ACN 668 992 489

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Definition

Docker is an open-source platform that enables developers and IT teams to build, package, deploy, and run applications within containers. Containers are lightweight, isolated environments that include everything needed to run software—such as code, runtime, libraries, and dependencies—ensuring consistent performance across different environments.

Unlike virtual machines, Docker containers share the host system’s operating system kernel, making them faster, more efficient, and less resource-intensive. Docker simplifies development pipelines by allowing teams to standardize environments, eliminate “it works on my machine” issues, and scale applications seamlessly.

Advanced

Docker uses a client-server architecture with three core components: the Docker Engine (runtime), Docker CLI (command-line interface), and Docker Hub (image repository). Applications are packaged as Docker images, which can be versioned, shared, and deployed across development, testing, and production environments.

Advanced use cases include orchestrating containers at scale with platforms such as Kubernetes or Docker Swarm, enabling microservices architectures, and supporting CI/CD pipelines. Security practices like image signing, vulnerability scanning, and least-privilege container configurations are vital for enterprise adoption.

Why it matters

  • Provides consistent application environments across development, testing, and production.
  • Reduces infrastructure costs by improving resource utilization.
  • Speeds up deployment and scaling of applications.
  • Supports microservices and cloud-native development strategies.

Use cases

  • Running microservices-based applications in production.
  • Standardizing developer environments across teams.
  • Automating software delivery pipelines with CI/CD.
  • Deploying lightweight services on edge devices or cloud platforms.

Metrics

  • Container startup time.
  • Resource utilization efficiency (CPU, memory).
  • Number of container image pulls and deployments.
  • Vulnerability findings in container images.
  • Application uptime and reliability.

Issues

  • Security risks from unverified or outdated container images.
  • Complexity in managing containers at large scale without orchestration tools.
  • Resource contention when containers are not properly limited.
  • Storage and networking challenges in multi-container environments.

Example

An e-commerce company packages its web application, payment gateway, and recommendation engine into separate Docker containers. This allows independent updates, faster deployment, and seamless scaling during peak shopping seasons without disrupting service.