To create a custom Docker network driver, you need to write a Go plugin that implements NetworkDriverPlugin API and communicate with Docker via Unix sockets. 1. First understand the basics of Docker plug-in, and the network driver runs as an independent process; 2. Set up the Go development environment and build an HTTP server that listens to Unix sockets; 3. Implement the required API methods such as Plugin.Activate, GetCapabilities, CreateNetwork, etc. and return the correct JSON response; 4. Register the plug-in to the /run/docker/plugins/ directory and pass the dockernetwork

DockerSecretsprovideasecurewaytomanagesensitivedatainDockerenvironmentsbystoringsecretsseparatelyandinjectingthematruntime.TheyarepartofDockerSwarmmodeandmustbeusedwithinthatcontext.Tousethemeffectively,firstcreateasecretusingdockersecretcreate,thenr

DockerBuildKit is a modern image building backend. It can improve construction efficiency and maintainability by 1) parallel processing of independent construction steps, 2) more advanced caching mechanisms (such as remote cache reuse), and 3) structured output improves construction efficiency and maintainability, significantly optimizing the speed and flexibility of Docker image building. Users only need to enable the DOCKER_BUILDKIT environment variable or use the buildx command to activate this function.

The core feature of DockerCompose is to start multiple containers in one click and automatically handle the dependencies and network connections between them. It defines services, networks, volumes and other resources through a YAML file, realizes service orchestration (1), automatically creates an internal network to make services interoperable (2), supports data volume management to persist data (3), and implements configuration reuse and isolation through different profiles (4). Suitable for local development environment construction (1), preliminary verification of microservice architecture (2), test environment in CI/CD (3), and stand-alone deployment of small applications (4). To get started, you need to install Docker and its Compose plugin (1), create a project directory and write docker-compose

Kubernetes is not a replacement for Docker, but the next step in managing large-scale containers. Docker is used to build and run containers, while Kubernetes is used to orchestrate these containers across multiple machines. Specifically: 1. Docker packages applications and Kubernetes manages its operations; 2. Kubernetes automatically deploys, expands and manages containerized applications; 3. It realizes container orchestration through components such as nodes, pods and control planes; 4. Kubernetes works in collaboration with Docker to automatically restart failed containers, expand on demand, load balancing and no downtime updates; 5. Applicable to application scenarios that require rapid expansion, running microservices, high availability and multi-environment deployment.

A common way to create a Docker volume is to use the dockervolumecreate command and specify the volume name. The steps include: 1. Create a named volume using dockervolume-createmy-volume; 2. Mount the volume to the container through dockerrun-vmy-volume:/path/in/container; 3. Verify the volume using dockervolumels and clean useless volumes with dockervolumeprune. In addition, anonymous volume or binding mount can be selected. The former automatically generates an ID by Docker, and the latter maps the host directory directly to the container. Note that volumes are only valid locally, and external storage solutions are required across nodes.

There are three common ways to set environment variables in a Docker container: use the -e flag, define ENV instructions in a Dockerfile, or manage them through DockerCompose. 1. Adding the -e flag when using dockerrun can directly pass variables, which is suitable for temporary testing or CI/CD integration; 2. Using ENV in Dockerfile to set default values, which is suitable for fixed variables that are not often changed, but is not suitable for distinguishing different environment configurations; 3. DockerCompose can define variables through environment blocks or .env files, which is more conducive to development collaboration and configuration separation, and supports variable replacement. Choose the right method according to project needs or use multiple methods in combination

Docker containers are a lightweight, portable way to package applications and their dependencies together to ensure applications run consistently in different environments. Running instances created based on images enable developers to quickly start programs through "templates". Run the dockerrun command commonly used in containers. The specific steps include: 1. Install Docker; 2. Get or build a mirror; 3. Use the command to start the container. Containers share host kernels, are lighter and faster to boot than virtual machines. Beginners recommend starting with the official image, using dockerps to view the running status, using dockerlogs to view the logs, and regularly cleaning resources to optimize performance.