This guide walks you through upgrading Dify using Docker Compose or source code deployment, running required migration commands, backing up data, and fixing the "Invalid context structure" error caused by iterator output changes in version 1.9.1, with detailed code snippets and troubleshooting steps.
Docker‑PHP v4.0.0‑beta1 introduces hardened FrankenPHP images, upgraded Laravel automation, a slew of fine‑grained environment variables, and numerous quality‑of‑life and bug‑fix improvements that make containerized PHP deployments smoother, more secure, and ready for production‑grade Kubernetes workloads.
This article explains practical techniques for optimizing Docker images—including choosing lightweight base images, leveraging multi‑stage builds, using Docker's layer cache effectively, and consolidating RUN commands—to dramatically improve build speed, reduce image size, and enhance security.
This guide walks you through preparing the environment, installing ZLMediaKit via Docker, configuring FFmpeg, implementing a Spring Boot backend to control streaming processes, and using a simple HTML player with flv.js to publish and view live video streams.
This tutorial walks through both command‑line and Docker‑Compose installations of Grafana Mimir, shows how to configure Prometheus remote‑write, set up Grafana data sources, create recording and alerting rules, and explains key Mimir features such as multi‑tenant support, hash rings, object storage, HA tracking and retention policies.
This comprehensive Docker cheat sheet walks developers, DevOps engineers, and system administrators through over twenty essential Docker commands—including image building, registry authentication, container lifecycle management, and system cleanup—providing clear syntax and practical usage examples for efficient container operations.
This article explains the core concepts and trade‑offs of microservice container deployment, covering single‑container setups, multi‑container arrangements, cluster deployments, and Kubernetes orchestration, with practical Docker commands and visual diagrams.
This article explains why a Docker container reports an out‑of‑memory error even though the host shows over 2 GB of free memory, analyzes the discrepancy between MemFree and MemAvailable, examines Linux memory watermarks, and provides a step‑by‑step solution by adjusting vm.min_free_kbytes.
This step‑by‑step guide shows how to create a full‑stack, enterprise‑level DevOps CI/CD pipeline—from environment setup and Docker installation to Jenkins pipeline scripts, Kubernetes deployments, monitoring, security hardening, and cost‑optimisation—enabling teams to reduce release cycles from days to minutes within a week.
This article shares a 148‑page PPT that provides a thorough introduction to virtualization, covering classic models, hardware‑assisted techniques, CPU, memory, interrupt and timer virtualization, IOMMU/SMMU, XEN and KVM architectures, VCPU scheduling, memory management for Type‑1 and Type‑2 hypervisors, peripheral virtualization with virtio, and container/Docker concepts.
This guide walks through setting up a Docker‑Compose environment, configuring Canal to capture MySQL binlog changes, integrating it with a SpringBoot client, and forwarding change events to RabbitMQ, providing complete code snippets and step‑by‑step instructions for real‑time data change tracking.
Phel is a Lisp‑inspired functional programming language for PHP that integrates seamlessly with the PHP ecosystem, offering immutable data structures, a macro system, an interactive REPL, and concise syntax, while providing step‑by‑step installation via Docker or Composer.
Learn step‑by‑step how to set up Docker and Docker Compose on Linux, macOS, and Windows, install optional Composer, initialize a Webman project, and use the built‑in docker‑compose.yml to perform one‑click development or production deployments, including custom service configuration and troubleshooting tips.
Learn six practical techniques—including using minimal base images, multi‑stage builds, layer minimization, cache awareness, .dockerignore files, and external data storage—to dramatically reduce Docker image size, improve build speed, and lower security risks for containerized applications.
This article recounts a three‑month deep‑dive into Docker container performance, detailing how we identified root causes such as Java container‑awareness, CPU pinning, memory limits, I/O bottlenecks, and network overhead, and applied systematic tuning of cgroups, JVM flags, Docker Compose settings, and storage/network configurations to raise CPU usage to 90% and double throughput.
This comprehensive guide walks through the evolution of container technology, explains Docker's core mechanisms, and presents enterprise‑grade architecture, deployment strategies, monitoring, security hardening, and real‑world case studies, helping ops engineers build efficient, scalable, and secure production‑ready Docker environments.
This article evaluates various Docker base images—including Ubuntu, CentOS, Debian, Amazon Linux 2, official Python images, and Alpine—by examining stability, security updates, dependency freshness, library richness, Python version support, image size, and build time to guide developers in selecting the optimal base for Python applications.
This comprehensive DevOps training course covers theory, Jenkins, GitLab CI/CD, build tools, artifact management, SonarQube, Nexus, Docker/Kubernetes, VM deployment, Jira automation, and advanced extensions, providing step‑by‑step video tutorials for each topic.
JD Cloud has released JoyAgent‑JDGenie, the first fully product‑grade open‑source Java multi‑agent system that bundles front‑end, back‑end, framework, engine and core agents, supports major LLMs, offers layered architecture, Docker or manual deployment, and showcases demos such as PPT generation and sales analysis.
This article breaks down the key technologies—lightweight process isolation, layered union file systems, Linux namespaces and cgroups, and image caching—that enable Docker containers to start in milliseconds instead of seconds and dramatically improve deployment speed.
This guide explains how Laradock provides a ready‑to‑use Docker‑based PHP development environment, covering its configurable .env file, seamless PHP version switching, Chinese mirror acceleration, custom container builds, and step‑by‑step commands to launch services like NGINX, MySQL, Redis, and Composer.
Learn step-by-step how to prepare, containerize, and securely deploy a Spring Boot application on Kubernetes, covering health checks, metrics, logging, JVM tuning, multi-stage Docker builds, Helm-like resources, ConfigMaps, Secrets, Ingress, HPA, monitoring, CI/CD pipelines, and rollback strategies for production-grade reliability.
This comprehensive guide walks you through the fundamentals of Dify, an open‑source LLM application platform, its key features and use cases, and provides step‑by‑step instructions for preparing the environment, installing Docker and Docker‑Compose, and deploying Dify on a CentOS 7.9 server.
This article introduces the open‑source PandaWiki knowledge‑base system, outlines its AI‑driven features, details installation requirements and Docker‑based setup, and walks you through post‑install configuration, document import, and using its intelligent search and Q&A capabilities.
This step‑by‑step guide explains how to install Nacos 2.3.2 on Windows and Linux, covering version requirements, hardware recommendations, Docker‑Compose quick start, MySQL integration, production cluster topology, security hardening, monitoring with Prometheus, common troubleshooting, and clean uninstallation.
This guide introduces Docker’s core concepts, walks through installing Docker on Linux, Windows, and macOS, explains Dockerfile syntax with common commands, and shares practical tips for building efficient container images.
Learn five practical Dockerfile techniques—minimizing layers, using .dockerignore, multi‑stage builds, pinning base image versions, and adding HEALTHCHECK—to create smaller, faster, more secure containers, illustrated with real‑world examples and step‑by‑step commands for senior‑level efficiency.
This guide walks you through installing the open‑source Portainer UI, checking system and Docker versions, running the Portainer server and agent containers, accessing the web interface via HTTP/HTTPS, and completing the initial admin setup, providing a streamlined way to manage Docker and Kubernetes resources without command‑line complexity.
This guide shows how to run a complete Windows 11 (or other versions) inside a Docker container on macOS or Linux, using the open‑source dockur/windows project, with step‑by‑step instructions for Docker Compose, Docker CLI, and Kubernetes deployment, plus configuration tips and screenshots.
This article examines the fundamental mismatch between MySQL’s stateful nature and Docker’s container model, detailing performance penalties, data‑persistence risks, resource‑management challenges, security concerns, and operational complexity, while also outlining scenarios where Docker can be acceptable for development or limited production use.
This article evaluates several Docker base images—Ubuntu, CentOS, Debian, Amazon Linux 2, official Python images, and Alpine—by examining stability, security updates, dependency freshness, library richness, Python version, image size, LTS support, and build time to help developers choose the optimal foundation for Python applications.
This article explains why and how to run Windows environments in Docker containers, compares the two container modes, lists supported Windows images, provides a quick Hello World example, and highlights the main limitations you should consider before adopting Windows containers.
This article explains how Docker uses Linux kernel features—Namespaces for process isolation and Control Groups (cgroups) for resource limiting—to build a secure, lightweight container runtime, detailing their mechanisms, key structures, and practical configuration examples.
This guide explains how Psalm, a PHP static analysis tool, improves code quality by detecting type errors, logical bugs, and security issues, and covers its key features, installation steps, configuration options, IDE integration, automated fixes, and reasons to choose it over alternatives.
This guide walks through checking the system environment, installing the NVIDIA Docker plugin, configuring Docker to use the NVIDIA runtime, verifying GPU access, deploying the NVIDIA device plugin in a Kubernetes cluster, creating a GPU‑enabled pod, and testing GPU‑accelerated video processing with FFmpeg.
This comprehensive guide reveals essential CI/CD operational techniques—from pipeline bottleneck detection and Docker multi‑stage builds to parallel execution, smart testing, blue‑green and canary deployments, full‑stack monitoring, cost‑saving cloud strategies, and a real‑world e‑commerce case study—helping teams dramatically boost efficiency, reliability, and security.
Learn how to set up a robust GitLab CI pipeline for Symfony projects, covering preparation, .gitlab-ci.yml creation, defining stages such as test, lint, security, build, and deploy, Docker image configuration, job optimization, environment variables, database services, and pipeline execution.
While Docker once dominated containerization, its growing overhead, security concerns, and limited flexibility have prompted developers to explore lighter, more secure alternatives such as ServBay, Podman, containerd, and micro‑Kubernetes solutions, signaling a shift toward diversified, cloud‑native orchestration strategies for modern infrastructure.
This article examines why running MySQL in Docker is generally discouraged, covering container‑state mismatches, I/O and network performance penalties, data persistence challenges, resource limits, security concerns, monitoring difficulties, and finally outlines scenarios where Docker may be acceptable and recommended production alternatives.
This guide walks through the full process of analyzing requirements, selecting self‑hosted servers, preparing CentOS nodes, installing Docker and Docker‑Compose, configuring RabbitMQ, and deploying a three‑node high‑availability RabbitMQ cluster with detailed commands and configuration files.
This article explains the fundamental differences between Docker and Kubernetes, covering the problems each solves, core functionalities, management scope, and ideal application scenarios, helping readers choose the right tool for containerization and large‑scale orchestration.
This article walks you through MinIO’s features, deployment requirements, Docker installation, web‑UI access, bucket creation, sharing links, access policies, and using the MinIO client (mc) for common S3‑compatible operations, all with clear command examples and screenshots.
By containerizing PHP applications, versioning immutable Docker images, automating builds and tests, and employing blue‑green or canary deployments alongside IaC tools like Terraform, teams can build a reliable, zero‑downtime CI/CD pipeline that boosts consistency, repeatability, security, and rapid rollback capabilities.
This tutorial explains how to analyze Docker image internals, use the Dive tool and Docker Engine Python API to extract layer information, and employ the Dedockify script to reconstruct a functional Dockerfile from any pre‑built container image.
This comprehensive Docker tutorial walks you through the technology's origins, core concepts, installation steps, essential commands, image layering, volume management, Dockerfile creation, and networking, providing clear examples and code snippets to help beginners become proficient container users.
This guide explains how to set up HTTP/HTTPS proxy settings for Docker on Linux, covering daemon‑level configuration via systemd, per‑container proxy settings in ~/.docker/config.json, and build‑time proxy arguments, with step‑by‑step commands and notes on when changes take effect.
Starting from scratch, this guide outlines a practical 12‑month DevOps learning plan that emphasizes mastering Linux fundamentals, networking, scripting, Git, CI/CD, Docker, Kubernetes, cloud platforms, infrastructure‑as‑code, monitoring, and security, with concrete steps, tools, and a realistic study schedule to build real‑world competence.
Tianji is an open‑source all‑in‑one monitoring solution that combines website analytics, uptime monitoring, and server health checks with multi‑channel alerts, offering Docker‑based quick deployment, a responsive React dashboard, and extensible alert scripts for developers and small teams.
This guide walks you through automating the full lifecycle of a Spring Cloud microservice—from pushing code to Git, configuring Jenkins pipelines with SSH keys, building with Maven, packaging into Docker images, pushing to a registry, and finally deploying and updating the service on Kubernetes—all with step‑by‑step commands and scripts.
This article examines why containerizing MySQL often leads to data‑security, performance, state, and resource‑isolation problems, outlines five key drawbacks of running MySQL in Docker, and explains the scenarios where containerization can still be viable.
This guide walks through installing MinIO on CentOS 7, configuring it with Docker, setting up a Spring Boot project, and using Java code to perform chunked, resumable, and instant file uploads to MinIO's object storage, complete with sample code and testing steps.
An in‑depth guide explains Docker’s core architecture, detailing how lightweight containers leverage Linux namespaces for isolation, cgroups for resource control, and UnionFS for layered image storage, while contrasting containers with traditional VMs and showing practical command‑line examples.
This article examines Docker's diminishing universality, its historical impact, current limitations, and emerging alternatives such as lightweight runtimes, micro‑Kubernetes, and serverless platforms, guiding developers toward more efficient, secure, and adaptable container strategies for 2025 and beyond.
This article walks through installing JDGenie's Docker image, fixing configuration and Dockerfile issues, and evaluating its code‑analysis and animation‑generation capabilities against other open‑source agents, highlighting both its strengths and current limitations.
This tutorial introduces Envoy Proxy, explains its core building blocks—listeners, routes, clusters, and filters—demonstrates a quick Docker-based setup, and walks through a complete configuration that routes traffic based on URI paths, providing a practical five‑minute overview of service‑mesh fundamentals.
This article walks through Docker’s built‑in networks, details the four network modes (bridge, host, none, container), shows how to create and inspect network namespaces, configure veth pairs, map ports, set DNS and custom bridges, and provides concrete command‑line examples and diagrams.
This guide shows how to create a fully functional, self‑hosted n8n workflow automation instance at zero cost by combining Hugging Face Spaces for free Docker hosting with Supabase's free Postgres backend, covering account setup, environment configuration, deployment, and verification steps.
The article examines Docker's historic impact, its growing limitations in modern, large‑scale and diverse development environments, and surveys emerging lightweight runtimes, local development alternatives like ServBay, evolving orchestration options, and future trends shaping a more modular, secure, and AI‑driven container ecosystem.
This article reviews EasySearch, a lightweight Elasticsearch‑compatible search engine, covering its technical features, performance gains, ARM support, deployment steps, operational best practices, and migration scenarios to help enterprises evaluate it as a domestic alternative.
The article explains how to replace manual MCP Server development with Higress AI Gateway's API‑to‑MCP feature, showing step‑by‑step Docker setup, configuration of a simple SpringBoot service, MCP tool definition, request‑template options, and the resulting zero‑code deployment for AI agents.
This comprehensive guide walks you through Linux server security hardening, covering real-world incident analysis, a detailed checklist of system, SSH, firewall, kernel and logging configurations, plus ready-to-use Bash scripts, Ansible playbooks, Docker hardening, monitoring tools, and actionable steps to build an enterprise‑grade defense.
This guide reveals the most common Docker production vulnerabilities, such as privileged containers and outdated base images, and provides step‑by‑step hardening techniques—including minimal Alpine images, multi‑stage builds, user namespace isolation, resource limits, network policies, secret management, runtime security tools, and automated CI/CD scanning—to ensure enterprise‑grade container security.
This article provides a comprehensive guide to Docker, covering its core concepts, installation steps, essential commands, Dockerfile image creation, and networking modes such as bridge, host, and none, with practical code examples and diagrams.
This article introduces a hand‑picked collection of useful Docker images—including remote IDEs, database managers, task schedulers, lightweight serverless services, personal homepages, monitoring tools, note‑taking apps, analytics, navigation pages, file browsers, and Docker UI managers—providing key features, practical use‑cases, and ready‑to‑run docker‑run and docker‑compose commands for developers and ops engineers.
This guide provides four ready-to-use one‑click scripts for Linux that automate the installation of a Rust development environment, Tomcat 9 server, Docker engine, and Nginx web server, including supported distributions, usage steps, and post‑install considerations.
This article walks through a complete Go microservice project, demonstrating Dockerfile optimization, advanced docker‑compose techniques, essential commands, and best‑practice deployment strategies to help you master containerizing microservices.
This comprehensive guide explains why container security is essential in cloud‑native environments, outlines common threats, and provides step‑by‑step best‑practice recommendations—including secure image building, runtime hardening, Kubernetes hardening, secret management, monitoring, and an actionable implementation roadmap.
Learn how to configure a single GitLab Runner on an Ubuntu server to handle both shell and Docker executors by registering multiple runner instances, assigning distinct tags, and using .gitlab-ci.yml job tags for precise task scheduling, complete with step‑by‑step commands and examples.
This article compares two GitLab CI strategies—installing tools on‑the‑fly in scripts versus using a pre‑built Docker image—detailing their implementations, pros and cons, and concluding that pre‑built images provide superior speed, consistency, and security for long‑term projects.
This article explains Docker's architecture, covering how images serve as read‑only templates, how registries store and distribute images, and how containers use namespaces and cgroups to provide lightweight, isolated, and portable runtime environments for modern cloud‑native applications.
This guide shows how to enable instant messaging using RabbitMQ's MQTT plugin, run the broker in Docker, test with MQTTX, create a web‑based chat with MQTT.js, and integrate MQTT into a Spring Boot application, all without writing custom backend code.
This article walks through the fundamentals of Prometheus—its origins, core features, installation methods, configuration file structure, PromQL basics, HTTP API, Grafana integration, exporters for various services, and alerting with Alertmanager—providing step‑by‑step commands and examples to set up a complete monitoring solution.
Learn how to avoid common Dockerfile pitfalls, choose optimal base images, streamline layer caching, implement health checks, and apply security best practices with real code examples, enabling faster builds, smaller images, and reliable production deployments for developers and ops engineers alike.
This comprehensive guide walks you through containerizing applications, optimizing Docker images, securing containers, designing Kubernetes high‑availability clusters, implementing observability with Prometheus and ELK, automating CI/CD pipelines, applying RBAC and network policies, and cutting costs with autoscaling and resource tuning, all backed by real‑world code examples.
This article walks through Docker’s essential role in modern cloud-native architectures, explaining why containerization solves environment inconsistencies, and provides a step‑by‑step guide—including writing a Dockerfile, building images, running containers, and accessing services—for deploying Spring Boot microservices efficiently.
Learn how to protect Docker containers throughout their lifecycle—starting with secure base image selection and vulnerability scanning, through Dockerfile hardening, runtime configurations, network isolation, storage encryption, and continuous monitoring—using practical examples, scripts, and tools like Trivy, Docker Content Trust, Falco, and custom Seccomp profiles.
This guide introduces the open‑source DBSyncer tool, explains its key features, shows how to install it via Docker, and provides a step‑by‑step example of synchronizing a MySQL product table to an Elasticsearch index, including configuration, field mapping, and verification.
This article walks you through practical Docker image optimization methods—choosing lightweight base images, leveraging multi‑stage builds, trimming layers, using .dockerignore, applying BuildKit, and runtime tweaks—showing real‑world before‑and‑after results that cut image size by up to 90% and dramatically speed up builds and deployments.
This tutorial walks you through removing old Docker packages, configuring yum repositories (official and Alibaba Cloud mirrors), installing a specific Docker Engine version, setting up image acceleration, verifying Docker, installing Docker‑Compose, downloading and configuring Harbor, and finally validating the Harbor registry on a CentOS system.
This guide explains how to use the lightweight MQTT protocol with RabbitMQ, covering Docker setup, enabling the MQTT plugin, testing with MQTTX, creating a front‑end chat using MQTT.js, and integrating MQTT into a SpringBoot application for server‑side messaging, all without writing custom back‑end code.
This article explains Docker’s various network modes—including bridge, host, none, and container—detailing their architecture, use‑cases, and limitations, and also covers Docker’s network drivers, how to create and connect networks via CLI, and the service discovery and load‑balancing features provided by Docker Swarm.
This guide explains how to set up a fully automated pipeline that syncs Docker Hub images to the CNB registry using GitHub Actions, skopeo, and configurable YAML files, supporting selective or full mirroring, version overrides, and secure credential handling.
The article analyzes why running MySQL in Docker containers can cause data‑security risks, performance bottlenecks, state management problems, and insufficient resource isolation, while also outlining scenarios where containerization might still be viable.
The guide explains what the check-docker-connection utility does, its key features, required environment, command‑line options, and provides step‑by‑step examples for monitoring single or multiple Docker containers and displaying the top N containers by network connections, helping users analyze network performance and troubleshoot issues.
This guide introduces NanoMQ, a lightweight high‑performance MQTT broker for edge and IoT scenarios, outlines its key features, core advantages, and provides step‑by‑step Docker deployment, client connection, and publishing examples with PHP code.
This tutorial shows how to use IntelliJ IDEA and Docker to remotely deploy SpringBoot applications with a single click, comparing traditional jar uploads with modern containerized deployment, and provides step‑by‑step configuration, Dockerfile creation, and troubleshooting tips.
This guide introduces RustFS, a high‑performance Rust‑based distributed object storage system, covering its key features, Docker installation, console usage, and step‑by‑step integration with SpringBoot for file upload and deletion, including code snippets and configuration details.
This article introduces JD's open‑source JoyAgent‑JDGenie, a lightweight multi‑agent framework, explains its architecture and performance, and provides step‑by‑step instructions for local Docker deployment, configuration, and usage for creating AI‑driven applications.
Explore comprehensive Docker container security from an attacker’s perspective to expert defenses, featuring real-world escape incidents, threat matrices, five detailed penetration testing scenarios, enterprise-grade protection frameworks, monitoring scripts, and actionable best practices for securing images, runtimes, networks, and access controls.
This article walks through ByteDance’s open‑source Coze AI Agent platform—its components, Apache‑2.0 license, Golang backend and React/TypeScript frontend architecture, Docker‑Compose deployment steps, model configuration, container startup, UI access, and the practical benefits it brings to developers and enterprises.
This article provides a comprehensive, hands‑on tutorial for installing Ollama, Docker, and the open‑source Coze Studio on a local machine, configuring various LLM services such as Qwen 3, DeepSeek‑V3, and OpenRouter, and running the platform via Docker Compose to create and test AI agents.
This article explains what Podman is, highlights its daemon‑less, rootless architecture compared with Docker, details key differences, provides common command references, installation steps, configuration tips, and practical usage examples for managing containers and images on Linux systems.
This guide shows how to integrate Spring Boot DevTools for automatic hot deployment, configure remote debugging via Docker, and streamline development with IDE auto‑build settings, providing step‑by‑step code examples and configuration snippets.
This guide walks you through preparing the environment, comparing traditional JAR deployment with IDEA‑plus‑Docker one‑click deployment, configuring SSH and Docker daemon, writing a Dockerfile, and setting up IntelliJ remote run configurations, culminating in a fully automated SpringBoot launch with live logs.
This article explains how Docker relies on Linux Control Groups (cgroups) to provide resource isolation, limiting, priority management, and hierarchical process control, ensuring containers run efficiently without one process monopolizing CPU, memory, or I/O resources.
This article explains why Docker images bloat, then demonstrates using multi‑stage builds, Alpine base images, and Trivy vulnerability scanning—plus CI/CD integration—to produce lightweight, secure containers and streamline DevSecOps workflows.
The article examines Docker's diminishing dominance, outlines its historical impact and current limitations, and explores lighter alternatives, modern runtimes, and evolving orchestration solutions that together shape the next generation of containerized development and deployment.
This tutorial walks through preparing three CentOS 7 hosts, installing Docker and Kubernetes components, initializing a master node, handling common errors, joining worker nodes, installing a CNI plugin, testing the cluster, and provides essential kubectl commands for ongoing management.
This article explains why Docker images often become bloated, outlines three hidden pitfalls of official images, and demonstrates a 75% size reduction using multi‑stage builds with Alpine, backed by real‑world performance data and practical anti‑pitfall tips.
This guide walks you through installing and configuring Nginx on CentOS, Docker, and macOS, explains core concepts like event‑driven architecture, compares Nginx with Tomcat, and clarifies the roles of traffic gateways, API gateways, and service registries, providing practical commands and Q&A for developers.
