stefanjacobs/multistage_docker

Multistage Docker Build

What this is about

Inspiration from

• http://pliutau.com/multi-stage-dockerfile-for-golang-application/
• https://medium.com/@cashalot/how-to-build-lightweight-docker-container-for-go-app-15e65de6300e

The idea is that you want to

1. not have the complete build environment in your final container
2. want to have a minimum sized container with just the executable.

The comparison is 703MB (including golang build context) vs. 6.3MB (Go executable in alpine image) on my local machine - and that is a noteworthy difference. With that you have the advantage of a docker based build system and a docker based executable.

Native Docker Build&Run

Building the image "multistage":

docker build . -t multistage

Running the container "multistage":

docker run multistage

Docker-Compose Build&Run

Building and running:

docker-compose up

License

Creative Commons Attribution 4.0, see License.