After a couple of months, I’ve started to update again my blog, but at this time (on windows) I got a lot of problems installing, configuring ruby smoothly.

The Challenge

Easily configure and run my blog on any device without a pain

Features:

• I should be able to create a new blog post and update it on my OS
• the blog will run in Docker container and render the updated page as I type

The Solution

• a) Create a custom Docker image that will have all prerequisites installed
  • all gems are collected from requirements.txt
  • at the end the same rake command that we use from command line is called to build and start the blog

FROM ruby:3.1.2-slim-buster as builder
WORKDIR /site
COPY Gemfile .
RUN apt-get update && \
    apt-get install -y build-essential && \
    bundle config build.ffi --enable-system-libffi && \
    bundle install

EXPOSE 4000

CMD [ "rake", "build", "start"]

• b) building the image

$ docker build -t pbrodner-site .

• c) running the “development” image and use current folder as a shared volume - so updates from HOST OS can be rendered successfully

docker run -v $(pwd):/site -it -p 4000:4000 pbrodner-site