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Docker is a computer program that performs operating-system-level virtualization also known as containerization. It is developed by Docker, Inc. Docker is primarily developed for Linux, where it uses the resource isolation features of the Linux kernel such as cgroups and kernel namespaces, and a union-capable file system such as OverlayFS and others to allow independent "containers" to run within a single Linux instance, avoiding the overhead of starting and maintaining virtual machines (VMs). The Linux kernel's support for namespaces mostly isolates an application's view of the operating environment, including process trees, network, user IDs and mounted file systems, while the kernel's cgroups provide resource limiting for memory and CPU. Since version 0.9, Docker includes the libcontainer library as its own way to directly use virtualization facilities provided by the Linux kernel, in addition to using abstracted virtualization interfaces via libvirt, LXC and systemd-nspawn.
Currently Docker has been integrated and supported by almost all software corporations and cloud providers such as Google, Microsoft, IBM, Oracle etc.
I attended a second day of presentations about various aspects of WordPress. The presentation covering the Gutenberg plugin and its Squarespace-esque blocks for content was definitely a highlight, as was the presentation from Google about AMP page acceleration. I wrapped up my day at the conference with a workshop on using Docker in conjunction with WordPress. I didn't learn anything I didn't already know, but it was nice to apply my self-taught Docker experience and keep up with everyone else.
1️⃣ - World clock with time zones in the Sava Convention Center, where WordCamp Europe 2018 was held.
2️⃣ - The convention center has a definite Soviet retro-futuristic feel.
3️⃣ - I've had to climb these stairs a few times in the past week, but only noticed the graffiti on either side of the steps today.
⚽ MEX vs. GER tomorrow: 🇲🇽🇲🇽🇲🇽🇲🇽🇲🇽🇲🇽 #dwyeurotrip
🧠🕸🐳If you think about it, the bubbles in this bubble machine are like your cloud distributed app. ☁️😎Imagine the whale is Kubernetes or Docker Swarm, orchestrating your containers so that if one instance pops, another is spun up! 👥❤️How do you impress your friends with real-world metaphors about your code or architecture?