multistage_docker

README

href-counter

A Golang example application which counts internal vs. external hrefs within a page to rate SEO.

The golang.org/x/net/html package is used to iterate through all the HTML tokens in the web-page. It provides a working example of parsing HTML piece-by-piece.

This can be built with the Dockerfile in the repository or through go get.

References

Used in these two blog posts:

• One-shot containers on Docker Swarm
• Builder pattern vs. Multi-stage builds in Docker

Running the example

• With Go

  go build
  
  $ url=http://blog.alexellis.io/ ./href-counter
  {"internal":40,"external":2}
  
  $ url=http://blog.alexellis.io/golang-json-api-client/  ./href-counter
  {"internal":17,"external":15}
  

• Build with multi-stage build

  ./build.sh
  

• Run with Docker

  docker run -e url=https://www.alexellis.io/ -ti alexellis2/href-counter:0.1.0
  {"internal":6,"external":11}
  

• Build with multiple Dockerfiles

  ./build-multi-dockerfiles.sh