Skip to main content

Docker: The Whale's Stuck


Docker 1.2 - Words Mean Things

Images - The blueprints, make up the basis of containers. [docker pull to get Busybox]
Containers - Made from images to run the application [docker run of Busybox image]
Daemon - Background service managing running, building, distributing docker containers
Client - The Command Line that talks to the daemon, though it can be a GUI. I prefer cmd line.
Hub - Registry - Directory - of images.

2.0 - How to Run A Static Website

  1. Pull image from Hub
  2. Run Container
  3. See how to run a webserver
Well, mission (sort of) accomplished!



Use a site already hosted on a registry for this demon.

Locally, it’s not here. So we have to get it from the registry and run it.

Nginx is running… - That’s good!



But there are more commands we have to put in - and as you can see, my prompt (Morganwarss-MacBook-Air:~ morganwars$) is gone.

Yet, somehow…

It works? And my Wifi is off, so it really is using a local port.




Well, let’s make our own Image. Remember how we did it with Busybox?

We can pull specific versions of images, if you don’t provide specifics, Docker will get the latest version - and you may not want that.

And images go even further than that!

Base Image - No parent images, usually with an OS.
Child Images - Build upon base images, add additional functionality.

Official images - Supported by the people at Docker, usually one word (or phrase) long.

User images - Made by us! Formatted by user/image-name

I’m still iffy on how to move about containers.

Anyway, we clone the prakhar1989/docker-curriculum repository and change directory to one about a flask-app. This application is written in Python.

the onbuild version of things does the boring stuff to get an app running.

And the python:3-onbuild app isn’t found, so I think we’re going back to the drawing board with this demo.

Comments

Popular posts from this blog

What Do You Need? [AKA; List of Offered Services / My Next Role] (2020)

UPDATED 2021 I am a trusted outsourced remote consultant for your company.   I enjoy having the flexibility to take on temporary projects from time to time! I start at part-time, temp work for now. If we like each other, we can renegotiate. If anything sounds weird, out there, or unusual - Feel free to e-mail me .  3 Services Offered Technical: Cloud Technician     Azure [ See tag ] WORKING ON: Infrastructure As Code (Specifically Terraform/Azure and CloudFormation/AWS)  Support [Web: Example Job Description ] [Text : Example Description ]     I help you with adjustments in HTML, CSS, and Javascript.     When you email a business a question and they answer? That's me.   IT Operations Tech [ Example Job Description ]     Hardware and SaaS support.     Cisco routing and switching (Networking). CCNA, A+, Sec+, Azure certified WORKING ON: Junos Networking  Writing :      You want to pay me to write more of *waves hand* this blog? I am game .     I write B2C e-mails going out to o

Contactless Tech’s Role in the New Guest Experience ft. Intelity and The George

 Contactless hospitality technology is growing. You want to get away, and you'll be damned if a little thing like a deadly virus will stop you! But you still don't want to touch things. Ew. During the chat between INTELITY CEO Robert Stevenson and THE GEORGE Director of Operations Kerrie Hunter, you’ll learn how the historic boutique hotel has adapted a mobile-first guest experience in the wake of COVID-19—and how they see contactless technology affecting the future of hospitality. I don't remember how I found INTELITY (probably hoping to score a position with them), but I liked them enough to stay on the e-mail lists.  

Connecting IoT Devices to a Registration Server (Packet Tracer, Cisco)

In Packet Tracer, a demo software made by Cisco Systems. It certainly has changed a lot since 2016. It's almost an Olympic feat to even get started with it now, but it does look snazzy. This is for the new CCNA, that integrates, among other things, IoT and Automation, which I've worked on here before. Instructions here . I don't know if this is an aspect of "Let's make sure people are paying attention and not simply following blindly", or an oversight - The instructions indicate a Meraki Server, when a regular one is the working option here. I have to enable the IoT service on this server. Also, we assign the server an IPv4 address from a DHCP pool instead of giving it a static one. For something that handles our IoT business, perhaps that's safer; Getting a new IPv4 address every week or so is a minimal step against an intruder, but it is a step. There are no devices associated with this new server; In an earlier lab (not shown), I attached them to 'H