#Docker Container

[debian-official]

oh to have two girls stacked on top of you

[nixcraft]

Run a container inside another container! Linux nested virtualization lets you test complex setups, deploy apps easily, and even emulate AWS/GCP/Azure instances locally for fun and profit. See how to run Docker inside Incus containers

[hackeocafe]

How to Use Container Manager (Docker) on a Synology NAS - Beginners Guide

This step-by-step guide will show you how to install Container Manager on a Synology NAS and implement your own Docker containers! Container Manager is the "new" Docker application in versions of DSM newer than 7.2. While Container Manager is very similar to the old version of Docker, it has some awesome new features like Docker Compose. Learn everything about Container Manager in this full setup guide!

[qcs01]

Ansible Collections: Extending Ansible’s Capabilities

Ansible is a powerful automation tool used for configuration management, application deployment, and task automation. One of the key features that enhances its flexibility and extensibility is the concept of Ansible Collections. In this blog post, we'll explore what Ansible Collections are, how to create and use them, and look at some popular collections and their use cases.

Introduction to Ansible Collections

Ansible Collections are a way to package and distribute Ansible content. This content can include playbooks, roles, modules, plugins, and more. Collections allow users to organize their Ansible content and share it more easily, making it simpler to maintain and reuse.

Key Features of Ansible Collections:

Modularity: Collections break down Ansible content into modular components that can be independently developed, tested, and maintained.

Distribution: Collections can be distributed via Ansible Galaxy or private repositories, enabling easy sharing within teams or the wider Ansible community.

Versioning: Collections support versioning, allowing users to specify and depend on specific versions of a collection. How to Create and Use Collections in Your Projects

Creating and using Ansible Collections involves a few key steps. Here’s a guide to get you started:

1. Setting Up Your Collection

To create a new collection, you can use the ansible-galaxy command-line tool:

ansible-galaxy collection init my_namespace.my_collection

This command sets up a basic directory structure for your collection:

my_namespace/

└── my_collection/

├── docs/

├── plugins/

│ ├── modules/

│ ├── inventory/

│ └── ...

├── roles/

├── playbooks/

├── README.md

└── galaxy.yml

2. Adding Content to Your Collection

Populate your collection with the necessary content. For example, you can add roles, modules, and plugins under the respective directories. Update the galaxy.yml file with metadata about your collection.

3. Building and Publishing Your Collection

Once your collection is ready, you can build it using the following command:

ansible-galaxy collection build

This command creates a tarball of your collection, which you can then publish to Ansible Galaxy or a private repository:

ansible-galaxy collection publish my_namespace-my_collection-1.0.0.tar.gz

4. Using Collections in Your Projects

To use a collection in your Ansible project, specify it in your requirements.yml file:

collections:

- name: my_namespace.my_collection

version: 1.0.0

Then, install the collection using:

ansible-galaxy collection install -r requirements.yml

You can now use the content from the collection in your playbooks:--- - name: Example Playbook hosts: localhost tasks: - name: Use a module from the collection my_namespace.my_collection.my_module: param: value

Popular Collections and Their Use Cases

Here are some popular Ansible Collections and how they can be used:

1. community.general

Description: A collection of modules, plugins, and roles that are not tied to any specific provider or technology.

Use Cases: General-purpose tasks like file manipulation, network configuration, and user management.

2. amazon.aws

Description: Provides modules and plugins for managing AWS resources.

Use Cases: Automating AWS infrastructure, such as EC2 instances, S3 buckets, and RDS databases.

3. ansible.posix

Description: A collection of modules for managing POSIX systems.

Use Cases: Tasks specific to Unix-like systems, such as managing users, groups, and file systems.

4. cisco.ios

Description: Contains modules and plugins for automating Cisco IOS devices.

Use Cases: Network automation for Cisco routers and switches, including configuration management and backup.

5. kubernetes.core

Description: Provides modules for managing Kubernetes resources.

Use Cases: Deploying and managing Kubernetes applications, services, and configurations.

Conclusion

Ansible Collections significantly enhance the modularity, distribution, and reusability of Ansible content. By understanding how to create and use collections, you can streamline your automation workflows and share your work with others more effectively. Explore popular collections to leverage existing solutions and extend Ansible’s capabilities in your projects.

For more details click www.qcsdclabs.com

[breadstyx]

For the power users, there's also Lidarr, who can keep track of new releases and automates download/metadata gathering/renaming. That's the equivalent of aforementioned Soulseek and MusicBrainz Picard, bundled together.

And that can then be fed into a Plex server if you're really about that life, which will allow you to listen to your home library on the go - like a sort of homemade spotify (but this a bit more advanced). That's an equivalent to aforementioned Lyrion Music Server (and syncedlyrics, but with a subscription).

here's a list of programs/sites/whatever that were helpful to me when i was moving away from using spotify & back to downloading music:

soulseek - peer to peer downloading program, has most music you'd want. there's "rules" to it though and the UI is a little confusing, but you can figure it out. there's tutorials. i believe in you

cobalt.tools, ytiz.xyz, yt-dlp - mp3 downloaders, for the songs that you can't find on soulseek

musicbee - music player, extremely customiseable. reminds me of when i used itunes back in the day. has a lot of good features, including syncing music over to your phone

lastfm & listenbrainz - sites that keep track of your listening stats. i'd recommend this even if you still choose to use a music streaming service

syncedlyrics - cmd thing that gets you timed song lyrics, like the ones spotify has. there's no UI but it's easy enough to use. just grab the lyrics and timestamps it spits out and paste it into musicbee

music presence - program that shows what song you're listening to in your discord status, in case you use discord and enjoy the thought of other people seeing what you're listening to, which i do for some reason

i'm not going to lie to you and say that switching away from spotify/streaming services is an effortless task, it took me half a whole day of nonstop Work to get all my music downloaded and sorted out, but i will say that it was worth it!! and you should do it 👍 if you want to

[kropotkindersurprise]

June 4, 2025 - Dockers at a major French port on Wednesday refused to load a container with machine gun spare parts bound for Israel, saying they “will not take part in the ongoing genocide (in Gaza) orchestrated by the Israeli government,” according to broadcaster Franceinfo.

Dockers at the port of Marseille-Fos have set aside a container containing "spare parts for machine guns," and they "will not load it onto the ship bound for Haifa" in Israel, the Gulf of Fos branch of the General Confederation of Labor (CGT) announced in a statement.

The union confirmed that it was alerted by several networks that 19 pallets of Eurolink belts were to be shipped to Israel on Thursday. The Eurolink belts are spare parts for machine guns used by the Israeli army.

"The port of Marseille-Fos must not be used to supply the Israeli army. The dockworkers and port staff of the Gulf of Fos will not take part in the ongoing genocide orchestrated by the Israeli government. We stand for peace among people. We condemn all these armed conflicts that bring death, misery, and the displacement of populations," it added. [link]/[link]

[techsolvecentral]

Docker Guide: Introduction, Benefits, and Basic Example

This comprehensive guide offers an accessible introduction to

Docker, a powerful platform for developing, shipping, and running applications in isolated environments. We'll demystify what Docker is, explore its key benefits such as portability, scalability, and efficiency, and walk you through a practical, basic example to get you started with containerization.

#Docker #Containerization #DevOps #Introduction #Benefits #Example #Tutorial #Beginner #SoftwareDevelopment #ApplicationDeployment #Virtualization #Microservices

[saggiosguardo]

Un nuovo framework su macOS 26 consente la gestione di container nativamente

Con macOS Tahoe, Apple introduce una novità importante per gli sviluppatori: il nuovo Containerization framework, progettato per creare ambienti isolati in modo nativo e integrato nel sistema operativo. La novità è stata presentata alla WWDC 2025 durante la sessione “Meet Containerization”, ed è pensata per offrire un’alternativa moderna e leggera a strumenti di terze parti come Docker Desktop,…

[alfannas]

Membuat Docker Compose untuk CodeIgniter 4 dengan Apache, PostgreSQL, dan pgAdmin

Docker telah menjadi solusi populer dalam pengembangan aplikasi karena kemampuannya dalam mengelola lingkungan secara konsisten. Dalam artikel ini, kita akan membahas cara membuat Docker Compose untuk menjalankan CodeIgniter 4 dengan Apache, PostgreSQL, dan pgAdmin. Konfigurasi ini juga akan mengaktifkan ekstensi PHP intl, pgsql, dan mod_rewrite menggunakan Dockerfile untuk pengaturan yang lebih…

[kevinmarville]

Fixing Docker Run Issues Blocking GitHub Action PRs

github.com/All-Hands-AI/OpenHands/pull/8661 When a failing Docker command prevents a GitHub Action from completing a pull request, check the command syntax (--rm instead of --rn, properly formatted -v), review GitHub Action logs for error details, test locally, enable debug logging, and verify all dependencies. Ensuring proper setup helps prevent workflow disruptions.

[nixcraft]

I have been using Btrfs for several months, and it has been stable enough for me. It is a file system that can be used as a storage driver for Linux containers like LXD, Incus, or Docker. If you want to install Btrfs support on Debian Linux and format & mount a disk drive, see my tutorial

[digitaleduskill]

Docker and Containerization in Cloud Native Development

In the world of cloud native application development, the demand for speed, agility, and scalability has never been higher. Businesses strive to deliver software faster while maintaining performance, reliability, and security. One of the key technologies enabling this transformation is Docker—a powerful tool that uses containerization to simplify and streamline the development and deployment of applications.

Containers, especially when managed with Docker, have become fundamental to how modern applications are built and operated in cloud environments. They encapsulate everything an application needs to run—code, dependencies, libraries, and configuration—into lightweight, portable units. This approach has revolutionized the software lifecycle from development to production.

What Is Docker and Why Does It Matter?

Docker is an open-source platform that automates the deployment of applications inside software containers. Containers offer a more consistent and efficient way to manage software, allowing developers to build once and run anywhere—without worrying about environmental inconsistencies.

Before Docker, developers often faced the notorious "it works on my machine" issue. With Docker, you can run the same containerized app in development, testing, and production environments without modification. This consistency dramatically reduces bugs and deployment failures.

Benefits of Docker in Cloud Native Development

Docker plays a vital role in cloud native environments by promoting the principles of scalability, automation, and microservices-based architecture. Here’s how it contributes:

1. Portability and Consistency

Since containers include everything needed to run an app, they can move between cloud providers or on-prem systems without changes. Whether you're using AWS, Azure, GCP, or a private cloud, Docker provides a seamless deployment experience.

2. Resource Efficiency

Containers are lightweight and share the host system’s kernel, making them more efficient than virtual machines (VMs). You can run more containers on the same hardware, reducing costs and resource usage.

3. Rapid Deployment and Rollback

Docker enables faster application deployment through pre-configured images and automated CI/CD pipelines. If a new deployment fails, you can quickly roll back to a previous version by using container snapshots.

4. Isolation and Security

Each Docker container runs in isolation, ensuring that applications do not interfere with one another. This isolation also enhances security, as vulnerabilities in one container do not affect others on the same host.

5. Support for Microservices

Microservices architecture is a key component of cloud native application development. Docker supports this approach by enabling the development of loosely coupled services that can scale independently and communicate via APIs.

Docker Compose and Orchestration Tools

Docker alone is powerful, but in larger cloud native environments, you need tools to manage multiple containers and services. Docker Compose allows developers to define and manage multi-container applications using a single YAML file. For production-scale orchestration, Kubernetes takes over, managing deployment, scaling, and health of containers.

Docker integrates well with Kubernetes, providing a robust foundation for deploying and managing microservices-based applications at scale.

Real-World Use Cases of Docker in the Cloud

Many organizations already use Docker to power their digital transformation. For instance:

Netflix uses containerization to manage thousands of microservices that stream content globally.

Spotify runs its music streaming services in containers for consistent performance.

Airbnb speeds up development and testing by running staging environments in isolated containers.

These examples show how Docker not only supports large-scale operations but also enhances agility in cloud-based software development.

Best Practices for Using Docker in Cloud Native Environments

To make the most of Docker in your cloud native journey, consider these best practices:

Use minimal base images (like Alpine) to reduce attack surfaces and improve performance.

Keep containers stateless and use external services for data storage to support scalability.

Implement proper logging and monitoring to ensure container health and diagnose issues.

Use multi-stage builds to keep images clean and optimized for production.

Automate container updates using CI/CD tools for faster iteration and delivery.

These practices help maintain a secure, maintainable, and scalable cloud native architecture.

Challenges and Considerations

Despite its many advantages, Docker does come with challenges. Managing networking between containers, securing images, and handling persistent storage can be complex. However, with the right tools and strategies, these issues can be managed effectively.

Cloud providers now offer native services—like AWS ECS, Azure Container Instances, and Google Cloud Run—that simplify the management of containerized workloads, making Docker even more accessible for development teams.

Conclusion

Docker has become an essential part of cloud native application development by making it easier to build, deploy, and manage modern applications. Its simplicity, consistency, and compatibility with orchestration tools like Kubernetes make it a cornerstone technology for businesses embracing the cloud.

As organizations continue to evolve their software strategies, Docker will remain a key enabler—powering faster releases, better scalability, and more resilient applications in the cloud era.

[qcs01]

Unleashing Efficiency: Containerization with Docker

Introduction: In the fast-paced world of modern IT, agility and efficiency reign supreme. Enter Docker - a revolutionary tool that has transformed the way applications are developed, deployed, and managed. Containerization with Docker has become a cornerstone of contemporary software development, offering unparalleled flexibility, scalability, and portability. In this blog, we'll explore the fundamentals of Docker containerization, its benefits, and practical insights into leveraging Docker for streamlining your development workflow.

Understanding Docker Containerization: At its core, Docker is an open-source platform that enables developers to package applications and their dependencies into lightweight, self-contained units known as containers. Unlike traditional virtualization, where each application runs on its own guest operating system, Docker containers share the host operating system's kernel, resulting in significant resource savings and improved performance.

Key Benefits of Docker Containerization:

Portability: Docker containers encapsulate the application code, runtime, libraries, and dependencies, making them portable across different environments, from development to production.

Isolation: Containers provide a high degree of isolation, ensuring that applications run independently of each other without interference, thus enhancing security and stability.

Scalability: Docker's architecture facilitates effortless scaling by allowing applications to be deployed and replicated across multiple containers, enabling seamless horizontal scaling as demand fluctuates.

Consistency: With Docker, developers can create standardized environments using Dockerfiles and Docker Compose, ensuring consistency between development, testing, and production environments.

Speed: Docker accelerates the development lifecycle by reducing the time spent on setting up development environments, debugging compatibility issues, and deploying applications.

Getting Started with Docker: To embark on your Docker journey, begin by installing Docker Desktop or Docker Engine on your development machine. Docker Desktop provides a user-friendly interface for managing containers, while Docker Engine offers a command-line interface for advanced users.

Once Docker is installed, you can start building and running containers using Docker's command-line interface (CLI). The basic workflow involves:

Writing a Dockerfile: A text file that contains instructions for building a Docker image, specifying the base image, dependencies, environment variables, and commands to run.

Building Docker Images: Use the docker build command to build a Docker image from the Dockerfile.

Running Containers: Utilize the docker run command to create and run containers based on the Docker images.

Managing Containers: Docker provides a range of commands for managing containers, including starting, stopping, restarting, and removing containers.

Best Practices for Docker Containerization: To maximize the benefits of Docker containerization, consider the following best practices:

Keep Containers Lightweight: Minimize the size of Docker images by removing unnecessary dependencies and optimizing Dockerfiles.

Use Multi-Stage Builds: Employ multi-stage builds to reduce the size of Docker images and improve build times.

Utilize Docker Compose: Docker Compose simplifies the management of multi-container applications by defining them in a single YAML file.

Implement Health Checks: Define health checks in Dockerfiles to ensure that containers are functioning correctly and automatically restart them if they fail.

Secure Containers: Follow security best practices, such as running containers with non-root users, limiting container privileges, and regularly updating base images to patch vulnerabilities.

Conclusion: Docker containerization has revolutionized the way applications are developed, deployed, and managed, offering unparalleled agility, efficiency, and scalability. By embracing Docker, developers can streamline their development workflow, accelerate the deployment process, and improve the consistency and reliability of their applications. Whether you're a seasoned developer or just getting started, Docker opens up a world of possibilities, empowering you to build and deploy applications with ease in today's fast-paced digital landscape.

For more details visit www.qcsdclabs.com