Posts tagged docker in 2017
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How to compile and run a Pony program using Docker. My notes on using the Docker ponylang/ponyc container to compile and execute a Pony program without needing to install anything (since Docker will download and run the image the first time you run the command).
Building a location to time zone API with SpatiaLite, OpenStreetMap and Datasette
Given a latitude and longitude, how can we tell what time zone that point lies within? Here’s how I built a simple JSON API to answer that question, using a combination of data from OpenStreetMap, the SpatiaLite extension for SQLite and my Datasette API tool.
[... 2,185 words]Inside Docker’s “FROM scratch” (via) I’m a big fan of understanding your abstractions. Here’s a neat tutorial that dives deep into Docker’s “scratch” image which offers the smallest possible Docker image, and hence provides a great opportunity to understand what a Docker container at its most minimal does for you.
Run the First Edition of Unix (1972) with Docker
(via)
This is so cool... run docker run --rm -it bahamat/unix-1st-ed to drop into a simulation of a PDP-11 running genuine 1972 era Unix! If you haven't got into Docker yet, Docker for Mac is a single click install these days and works incredibly well.
gzthermal-web
(via)
I built a quick web application wrapping the gzthermal gzip visualization tool and deployed it to Zeit Now wrapped up in a Docker container. Give it a URL and it shows you a PNG visualization of how gzip encodes that page.
tuxracer-web.
Brilliant Docker hack from David Cooper: run docker run -p 8008:80 dtcooper/tuxracer-web to get Tux Racer (the 3D game) running in your browser, on top a cunning mix of the noVNC HTML5 VNC client and icecast for sound.
Datasette: instantly create and publish an API for your SQLite databases
I just shipped the first public version of datasette, a new tool for creating and publishing JSON APIs for SQLite databases.
[... 968 words]Docker.qcow2 never shrinks—disk space usage leak in docker for mac (via) Interesting year-long thread on disk usage by Docker for Mac, including a bunch of potential workarounds for if it swallows too much disk space.
Docker Containers on the Desktop (via) Jessie Frazelle’s classic explanation from 2015 of how she runs every desktop application on her Linux machine in its own Docker container.
Running a load testing Go utility using Docker for Mac
I’m playing around with Zeit Now at the moment (see my previous entry) and decided to hit it with some traffic using Apache Bench. I got this SSL handshake error:
[... 818 words]arxiv-vanity (via) Beautiful new project from Ben Firshman and Andreas Jansson: “Arxiv Vanity renders academic papers from Arxiv as responsive web pages so you don’t have to squint at a PDF”. It works by pulling the raw LaTeX source code from Arxiv and rendering it to HTML using a heavily customized Pandoc workflow. The real fun is in the architecture: it’s a Django app running on Heroku which fires up on-demand Hyper.sh Docker containers for each individual rendering job.
A Brief Intro to Docker for Djangonauts (via) This is great—a really clear introduction to both Docker and Docker Compose, aimed at Django developers. Includes line-by-line annotations of an example Dockerfile and docker-compose.yml.
Deploying an asynchronous Python microservice with Sanic and Zeit Now
Back in 2008 Natalie Downe and I deployed what today we would call a microservice: json-head, a tiny Google App Engine app that allowed you to make an HTTP head request against a URL and get back the HTTP headers as JSON. One of our initial use-scase for this was Natalie’s addSizes.js, an unobtrusive jQuery script that could annotate links to PDFs and other large files with their corresponding file size pulled from the Content-Length header. Another potential use-case is detecting broken links, since the API can be used to spot 404 status codes (as in this example).