Generate a Dockerfile for Go Microservice
As part of doing a few Go REST Services, for every project I usually put a Dockerfile to compile an run the project in a Docker container. The Dockerfile it’s always the same, just change it the project name, and I’m using godep.
So in DRY spirit a did a Minimal Viable Script to generate the Dockerfile for me, the project is in Github and I called godockerize.
The Dockerfile is based in the golang image, it follows these steps.
- Based in golang:stable
- Use godep for vendoring the dependencies. (if you are not using godep, It will break).
- Uses the project name and the root directory as a ENTRYPOINT
- Restores the dependencies via ‘godep restore’
- Compiles the project
- Exposes the port
Is inspired by this two blog post.
- http://blog.charmes.net/2014/11/release-go-code-and-others-via-docker.html
- https://blog.golang.org/docker
Install godockerize
$ go get github.com/dahernan/godockerize
Usage Example
# Go to the root directory of your project, for example
$ cd $GOPATH/src/github.com/dahernan/gopherscraper
# Run godockerize exposing the port 3001
$ godockerize -expose 3001
Dockerfile generated, you can build the image with:
$ docker build -t gopherscraper .
Run my microservice
$ docker run --rm -p 3001:3001 -e ES=192.168.1.101 gopherscraper
