Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
docker for rubyists
Search
Bryce "BonzoESC" Kerley
October 17, 2017
Programming
0
110
docker for rubyists
miamirb 10/16/2017
Bryce "BonzoESC" Kerley
October 17, 2017
Tweet
Share
More Decks by Bryce "BonzoESC" Kerley
See All by Bryce "BonzoESC" Kerley
Ruby in 2020
bryce
1
110
Rails and the Internet of Things
bryce
1
70
It's Not Ruby, But…
bryce
0
49
Ruby 2.5: What's New and What's Cool
bryce
0
63
Would You Like To Make A Game?
bryce
0
54
WebSockets and ActionCable
bryce
0
84
How I Learned to Stop Worrying and Like RSpec
bryce
0
77
How Do Computers Even Work?
bryce
1
190
Growing Distributed Systems: Abril Pro Ruby
bryce
0
52
Other Decks in Programming
See All in Programming
Flutter with Dart MCP: All You Need - 박제창 2025 I/O Extended Busan
itsmedreamwalker
0
150
Improving my own Ruby thereafter
sisshiki1969
1
160
ファインディ株式会社におけるMCP活用とサービス開発
starfish719
0
310
モバイルアプリからWebへの横展開を加速した話_Claude_Code_実践術.pdf
kazuyasakamoto
0
320
HTMLの品質ってなんだっけ? “HTMLクライテリア”の設計と実践
unachang113
4
2.8k
個人軟體時代
ethanhuang13
0
320
AI時代のUIはどこへ行く?
yusukebe
18
8.8k
MCPでVibe Working。そして、結局はContext Eng(略)/ Working with Vibe on MCP And Context Eng
rkaga
5
2.2k
アセットのコンパイルについて
ojun9
0
120
Kiroの仕様駆動開発から見えてきたAIコーディングとの正しい付き合い方
clshinji
1
210
ユーザーも開発者も悩ませない TV アプリ開発 ~Compose の内部実装から学ぶフォーカス制御~
taked137
0
150
もうちょっといいRubyプロファイラを作りたい (2025)
osyoyu
1
420
Featured
See All Featured
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
49
3k
Speed Design
sergeychernyshev
32
1.1k
How to Think Like a Performance Engineer
csswizardry
26
1.9k
Designing Experiences People Love
moore
142
24k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
32
1.5k
The Cult of Friendly URLs
andyhume
79
6.6k
What's in a price? How to price your products and services
michaelherold
246
12k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
61k
How GitHub (no longer) Works
holman
315
140k
Fantastic passwords and where to find them - at NoRuKo
philnash
52
3.4k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.9k
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
51
5.6k
Transcript
Docker for Rubyists Miami Ruby Brigade Oct. 16, 2017
Rails in 2005 • Compile Ruby from source • Install
Rubygems separately • Choose your own adventure: • CGI (slow) • FastCGI (quite miserable to set up) • App server (fast, low-grade miserable to set up) • Configure database • Figure out gem dependencies
Rails in 2017 • Choose your own install Ruby adventure
• rbenv • chruby • rvm • PPA • source • Configure database • Install dependencies
Better, Not Great • lotta configuration • need to script
it • ideally dev and prod are same
Configuration Management • Makes setting stuff up repeatable • Good
for production • Less-good for development
Vagrant • Makes setting up a VM repeatable • Good
but slow for development • Less common in production
Docker • Good for development • Good and common in
production • Plenty fast • Lots of work is done
Let's Dockerize Greatjobify
None
Greatjobify • Sinatra • ImageMagick
Greatjobify 1. Pick base image 2. Add OS packages 3.
Create and change to app directory 4. Add Gemfile and Gemfile.lock 5. Bundle 6. Add rest of app 7. Run it
Dockerfile FROM ruby:2.4.1 RUN apt-get update -qq && \
apt-get install -y build-essential imagemagick RUN mkdir /greatjobify WORKDIR /greatjobify ADD Gemfile* /greatjobify/ RUN bundle install ADD . /greatjobify EXPOSE 9292 CMD ["unicorn", "-p", "9292"]
Dockerfile FROM ruby:2.4.1 RUN apt-get update -qq && \
apt-get install -y build-essential imagemagick RUN mkdir /greatjobify WORKDIR /greatjobify ADD Gemfile* /greatjobify/ RUN bundle install ADD . /greatjobify EXPOSE 9292 CMD ["unicorn", "-p", "9292"] Base image
None
Dockerfile FROM ruby:2.4.1 RUN apt-get update -qq && \
apt-get install -y build-essential imagemagick RUN mkdir /greatjobify WORKDIR /greatjobify ADD Gemfile* /greatjobify/ RUN bundle install ADD . /greatjobify EXPOSE 9292 CMD ["unicorn", "-p", "9292"] OS packages
Dockerfile FROM ruby:2.4.1 RUN apt-get update -qq && \
apt-get install -y build-essential imagemagick RUN mkdir /greatjobify WORKDIR /greatjobify ADD Gemfile* /greatjobify/ RUN bundle install ADD . /greatjobify EXPOSE 9292 CMD ["unicorn", "-p", "9292"] Create and change to app directory
Dockerfile FROM ruby:2.4.1 RUN apt-get update -qq && \
apt-get install -y build-essential imagemagick RUN mkdir /greatjobify WORKDIR /greatjobify ADD Gemfile* /greatjobify/ RUN bundle install ADD . /greatjobify EXPOSE 9292 CMD ["unicorn", "-p", "9292"] Add Gemfile and Gemfile.lock
Dockerfile FROM ruby:2.4.1 RUN apt-get update -qq && \
apt-get install -y build-essential imagemagick RUN mkdir /greatjobify WORKDIR /greatjobify ADD Gemfile* /greatjobify/ RUN bundle install ADD . /greatjobify EXPOSE 9292 CMD ["unicorn", "-p", "9292"] Bundle
Dockerfile FROM ruby:2.4.1 RUN apt-get update -qq && \
apt-get install -y build-essential imagemagick RUN mkdir /greatjobify WORKDIR /greatjobify ADD Gemfile* /greatjobify/ RUN bundle install ADD . /greatjobify EXPOSE 9292 CMD ["unicorn", "-p", "9292"] Add rest of the app
Dockerfile FROM ruby:2.4.1 RUN apt-get update -qq && \
apt-get install -y build-essential imagemagick RUN mkdir /greatjobify WORKDIR /greatjobify ADD Gemfile* /greatjobify/ RUN bundle install ADD . /greatjobify EXPOSE 9292 CMD ["unicorn", "-p", "9292"] Declare a listening port
Dockerfile FROM ruby:2.4.1 RUN apt-get update -qq && \
apt-get install -y build-essential imagemagick RUN mkdir /greatjobify WORKDIR /greatjobify ADD Gemfile* /greatjobify/ RUN bundle install ADD . /greatjobify EXPOSE 9292 CMD ["unicorn", "-p", "9292"] Command to run
Dockerfile FROM ruby:2.4.1 RUN apt-get update -qq && \
apt-get install -y build-essential imagemagick RUN mkdir /greatjobify WORKDIR /greatjobify ADD Gemfile* /greatjobify/ RUN bundle install ADD . /greatjobify EXPOSE 9292 CMD ["unicorn", "-p", "9292"]
Building the Image docker build -t greatjobify . Name it
"greatjobify"
None
None
And there it is
Running it docker run --rm -p 9292:9292 -it greatjobify Remove
the instance afterwards Forward instance port 9292 to host port 9292 Keep stdio open and hook it up here The image to run
tfw you don't update your apps more than a couple
times per decade
None
None
External Services greatjobify has an optional dependency on memcache
External Services • Instances can run multiple processes • Instances
should be single-purpose • Horizontal scalability • Orchestrate several instances to work together
Docker Compose "Orchestration"
docker-compose.yml • Describe each instance that you need • base
image or build directory • mounted volumes • dependencies • open ports • commands • environment variables
None
web.rb (snippet) memcache_address = ENV['MEMCACHIER_SERVERS'] || 'localhost:11211' memcache =
[ memcache_address, { username: ENV['MEMCACHIER_USERNAME'] || nil, password: ENV['MEMCACHIER_PASSWORD'] || nil } ] dalli = Dalli::Client.new *memcache use Rack::Cache, :metastore => dalli, :entitystore => dalli
docker-compose.yml • Web service • Build the current directory •
Expose 9292 • Depend on memcached service • Set MEMCACHIER_SERVERS environment variable • Memcached service • Use the "memcached" image
docker-compose.yml version: '3' services: web: build: .
ports: - "9292:9292" depends_on: - memcached environment: - MEMCACHIER_SERVERS=memcached memcached: image: memcached
Running It docker-compose up
None
None
None
None
None
Rails App • Similar to Sinatra • Web process •
Db processes • Support processes • Database console • App console
Docker in Production • Google Container Engine • AWS Elastic
beanstalk • Heroku Container Registry
Docker in Production • Docker Swarm • Kubernetes