formerly Docker Enterprise
Docker was an internal tool used with dotCloud for the Platform as a Service (PaaS) company and was released to the public in 2013. The idea for Docker originated from previous attempts at creating independent, isolated applications complete with all operational dependencies bundled into a single container.
Docker uses the Linux Kernel’s virtualization capabilities to run applications using a libcontainer library programmed in the Go language. This makes the execution environment entirely independent from the underlying infrastructure. Specifically, Docker allows resource isolation to reduce the overhead of starting and maintaining virtual machines for application dependencies or service scalability.
This makes Docker perfect for deploying applications on any of the following environments:
- On-site servers or virtualized data centers
- Public or Private Cloud environments
- Bare Metal Servers
Docker packages an application (and all its dependencies) into a container that runs on any Linux server, making it flexible and easily portable. The latest version of Docker also supports Windows applications and environments. The container isolates the applications view of the operating environment while providing resource limiting for CPU and Memory on the box.
Docker defines a container as a standardized unit of software. The containers are stored as images, which includes the code, runtime libraries, system tools and settings. Images only become containers during runtime, ensuring that resource consumption only occurs once someone accesses the application using the Docker engine.
Docker containers provide:
- Industry standardized containers, making applications portable anywhere.
- Lightweight execution at runtime, as the containers share the OS’s system kernel.
- Secured applications with the strongest isolation by default.
To work, Docker Containers use a daemon called dockerd as a persistent process to handle container objects. The ability to create new environments quickly and regardless for task purpose means development and production lifecycles decrease exponentially. By adopting Docker Containers, companies can drastically increase their Continuous Integration and Continuous Delivery (CI/CD) pipelines.
Docker Desktop is a Windows and Mac OS-based application to quickly build and deploy containerized applications. You can deploy production ready units of software on either Kubernetes or Swarm, and Docker Desktop works with any framework or language.
Docker Desktop’s features include:
- Quick and easy setup without the need for Virtualized Development Environments
- A complete and certified Kubernetes environment
- Desktop to Server alignment
- Templates for Containerized Applications that you can customize according to your own requirements
- Controls for Enterprise Deployments with lockable settings and endpoint management tools
Docker Desktop also provides supply chain security when integrated with Docker Hub and Docker Trusted Registry.
Docker Development Tools
Additional development tools integrate your Docker Engine and Docker Compose APIs with your CI/CD environment. This improves not only the time it takes to containerize your DevOps lifecycle, but also simplifies how you manage your Docker images and registries.
The Docker Development Tools include:
- Docker Build for different architecture and environments.
- Docker App for packaging, installing, and managing containers.
- Docker Assemble for framework awareness to automate the creation of the Dockerfile.
- Docker Context for switching between environments such as test, stage, and production.
Share and Collaborate with Docker Hub
Docker Hub is the world’s largest repository of container images with various content sources, including container community developers, open source projects, and independent software vendors (ISV) building and distributing their code in containers. Users can access free public repositories for storing and sharing images or can choose a subscription plan for private repos.
With Docker Hub You Can
Explore the world’s largest container image repository: Easily search more than one million container images, including Certified and community-provided images.
Share and store images in public or private repositories: Get access to free public repositories or choose a subscription plan for private repos.
Private Repositories to Share Container Images
Docker Hub is a hosted repository service provided by Docker for finding and sharing container images with your team. Key features include:
- Private Repositories: Push and pull container images
- Automated Builds: Automatically build container images from GitHub and Bitbucket and push them to Docker Hub
- Teams & Organizations: Manage access to private repositories
- Official Images: Pull and use high-quality container images provided by Docker
- Publisher Images: Pull and use high-quality container images provided by external vendors. Certified images also include support and guarantee compatibility with Docker Enterprise
- Webhooks: Trigger actions after a successful push to a repository to integrate Docker Hub with other services
ReleaseTEAM for Your Docker Requirements
While the DevOps revolution is here to stay, containerized units of code provide the most efficient way to speed up the CI/CD pipelines. The Docker platform provides the best-in-class container packaging system available today. ReleaseTEAM has been at the forefront of DevOps process adoption and specializes in all the technologies and processes involved. They provide sales, training, staff mentoring and augmentation, support, and consulting services for the entire ALC.